If you are referring to the slur in measure 7, I don't find it all that bad, but I couldn't come up with any tricks to change it.
Try this on an 18pt staff with no xspace, vertical size of 22/12 and 1/2" page margins.
!NoteWorthyComposerClip(2.0,Single)
|Clef|Type:Treble
|Key|Signature:Bb
|TimeSig|Signature:Common
|Note|Dur:Half,Slur|Pos:n0^|Opts:Stem=Down
|Note|Dur:8th,Slur|Pos:0|Opts:Stem=Down,Beam=First,XNoteSpace=2
|Note|Dur:16th,Slur|Pos:2|Opts:Stem=Down,Beam
|Note|Dur:16th,Slur|Pos:4|Opts:Stem=Down,Beam=End
|Note|Dur:4th,Grace|Pos:6^|Opts:StemLength=3|Visibility:Never
|Note|Dur:16th,Slur|Pos:6|Opts:Stem=Down,Beam=First
|Note|Dur:16th,Slur|Pos:4|Opts:Stem=Down,Beam
|Note|Dur:16th,Slur|Pos:0|Opts:Stem=Down,Beam
|Note|Dur:16th,Slur|Pos:-1|Opts:Stem=Down,Beam=End
|Bar
|Note|Dur:Half,Slur|Pos:n0^|Opts:Stem=Down
|Note|Dur:8th|Pos:0|Opts:Stem=Down,StemLength=12,Beam=First,XNoteSpace=2
|Note|Dur:32nd,Slur|Pos:-1|Opts:Stem=Down,Beam
|Note|Dur:32nd,Slur|Pos:0|Opts:Stem=Down,Beam
|Note|Dur:32nd,Slur|Pos:2|Opts:Stem=Down,Beam
|Note|Dur:4th,Grace|Pos:4^|Opts:StemLength=7|Visibility:Never
|Note|Dur:32nd,Slur|Pos:4|Opts:Stem=Down,Beam=End
|Note|Dur:32nd,Slur|Pos:n7|Opts:Stem=Down,Beam=First
|Note|Dur:32nd,Slur|Pos:6|Opts:Stem=Down,Beam
|Note|Dur:32nd,Slur|Pos:4|Opts:Stem=Down,Beam
|Note|Dur:32nd,Slur|Pos:3|Opts:Stem=Down,StemLength=9,Beam=End
|Note|Dur:32nd,Slur|Pos:2|Opts:Stem=Down,StemLength=10,Beam=First
|Note|Dur:32nd,Slur|Pos:0|Opts:Stem=Down,Beam
|Note|Dur:32nd,Slur|Pos:-1|Opts:Stem=Down,Beam
|Note|Dur:32nd,Slur|Pos:-2|Opts:Stem=Down,StemLength=10,Beam=End
|Bar|SysBreak:Y
|Note|Dur:Half,Slur|Pos:n0^|Opts:Stem=Down
|Note|Dur:8th|Pos:0|Opts:Stem=Down,StemLength=12,Beam=First,XNoteSpace=2
|Note|Dur:32nd,Slur|Pos:-1|Opts:Stem=Down,Beam
|Note|Dur:32nd,Slur|Pos:0|Opts:Stem=Down,Beam
|Note|Dur:32nd,Slur|Pos:2|Opts:Stem=Down,Beam
|Note|Dur:4th,Grace|Pos:4^|Opts:StemLength=7|Visibility:Never
|Note|Dur:32nd,Slur|Pos:4|Opts:Stem=Down,Beam=End
|Note|Dur:32nd,Slur|Pos:n7|Opts:Stem=Down,Beam=First
|Note|Dur:32nd,Slur|Pos:6|Opts:Stem=Down,Beam
|Note|Dur:32nd,Slur|Pos:4|Opts:Stem=Down,Beam
|Note|Dur:32nd,Slur|Pos:3|Opts:Stem=Down,StemLength=9,Beam=End
|Note|Dur:32nd,Slur|Pos:2|Opts:Stem=Down,StemLength=10,Beam=First
|Note|Dur:32nd,Slur|Pos:0|Opts:Stem=Down,Beam
|Note|Dur:32nd,Slur|Pos:-1|Opts:Stem=Down,Beam
|Note|Dur:32nd,Slur|Pos:-2|Opts:Stem=Down,StemLength=10,Beam=End
|Bar
|Note|Dur:Half,Slur|Pos:n0^|Opts:Stem=Down
|Note|Dur:8th|Pos:0|Opts:Stem=Up,Beam=First,XNoteSpace=2
|Note|Dur:16th|Pos:-3|Opts:Stem=Up,Beam
|Note|Dur:16th|Pos:-1|Opts:Stem=Up,Beam=End
|Note|Dur:16th|Pos:1|Opts:Stem=Down,Beam=First
|Note|Dur:16th|Pos:2|Opts:Stem=Down,Beam=End
|Note|Dur:16th,Triplet=First|Pos:4|Opts:Stem=Down,Beam=First
|Note|Dur:16th,Triplet|Pos:6|Opts:Stem=Down,Beam
|Note|Dur:16th,Triplet=End|Pos:n7|Opts:Stem=Down,Beam=End
|Bar
|Note|Dur:4th|Pos:6^
|Note|Dur:8th|Pos:6|Opts:Stem=Down,Beam=First,XNoteSpace=1
|Note|Dur:16th,Slur|Pos:4|Opts:Stem=Down,Beam
|Note|Dur:16th,Slur|Pos:2|Opts:Stem=Down,Beam=End
|Note|Dur:16th,Slur|Pos:n0|Opts:Stem=Up,Beam=First
|Note|Dur:16th,Slur|Pos:-1|Opts:Stem=Up,Beam
|Note|Dur:16th,Slur|Pos:-3|Opts:Stem=Up,Beam
|Note|Dur:16th,Slur|Pos:-5|Opts:Stem=Up,Beam=End
|Note|Dur:16th,Slur|Pos:n-7|Opts:Stem=Up,Beam=First
|Note|Dur:16th,Slur|Pos:-8|Opts:Stem=Up,Beam
|Note|Dur:8th,Slur|Pos:-7^|Opts:Stem=Up,Beam=End
|Bar
|Note|Dur:Whole,Slur|Pos:-7^|Opts:Stem=Down
|Bar|SysBreak:Y
|Note|Dur:Whole,Slur|Pos:-7|Opts:Stem=Down
|Bar
|Note|Dur:4th|Pos:-8
|Dynamic|Style:mf|Pos:-13|Visibility:Never
|Note|Dur:8th|Pos:-10|Opts:Stem=Up,Crescendo,StemLength=11,Beam=First
|Text|Text:" "|Font:StaffBold|Pos:7|Wide:Y|Justify:Center|Placement:AtNextNote
|Note|Dur:32nd,Triplet=First|Pos:-8|Opts:Stem=Up,Crescendo,Beam
|Note|Dur:32nd,Triplet|Pos:-5|Opts:Stem=Up,Crescendo,StemLength=9,Beam
|Note|Dur:32nd,Triplet|Pos:-1|Opts:Stem=Up,Crescendo,Beam
|Note|Dur:32nd,Triplet|Pos:2|Opts:Stem=Up,Crescendo,Beam
|Note|Dur:32nd,Triplet|Pos:6|Opts:Stem=Up,Crescendo,Beam
|Note|Dur:32nd,Triplet=End|Pos:9|Opts:Stem=Up,StemLength=10,Beam=End
|Note|Dur:4th|Pos:11
|Text|Text:"tr ~~~~"|Font:StaffItalic|Pos:15|Placement:AtNextNote
|Note|Dur:4th,Slur|Pos:10|Opts:XNoteSpace=1
|Bar
|Note|Dur:32nd,Grace|Pos:#8|Opts:Stem=Down,StemLength=11,Beam=First
|Note|Dur:32nd,Grace|Pos:n7|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:6|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:7|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:6|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:5|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:3|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:#1|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:-1|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:-2|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:-4|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:#-6|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:n-7|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:-8|Opts:Stem=Down,StemLength=10,Beam=End
|RestChord|Dur:4th|Opts:Stem=Up,ArticulationsOnStem,VertOffset=-4|Dur2:4th|Pos2:-7^|Visibility:Never
|Note|Dur:Half|Pos:-7
|Note|Dur:8th,Grace,Slur|Pos:-10|Opts:Stem=Up,StemLength=12,Beam=First
|Text|Text:" "|Font:StaffBold|Pos:7|Wide:Y|Justify:Center|Placement:AtNextNote
|Note|Dur:32nd,Triplet=First,Grace,Slur|Pos:-8|Opts:Stem=Up,Beam
|Note|Dur:32nd,Triplet,Grace,Slur|Pos:-5|Opts:Stem=Up,Beam
|Note|Dur:32nd,Triplet,Grace,Slur|Pos:-1|Opts:Stem=Up,Beam
|Note|Dur:32nd,Triplet,Grace,Slur|Pos:2|Opts:Stem=Up,Beam
|Note|Dur:32nd,Triplet,Grace,Slur|Pos:6|Opts:Stem=Up,Beam
|Note|Dur:32nd,Triplet=End,Grace,Slur|Pos:9|Opts:Stem=Up,StemLength=10,Beam=End
|Rest|Dur:4th|Opts:VertOffset=8|Visibility:Never
|Bar|SysBreak:Y
|Note|Dur:4th|Pos:11
|Text|Text:"tr ~~~~"|Font:StaffItalic|Pos:15|Placement:AtNextNote
|Note|Dur:4th,Slur|Pos:10|Opts:XNoteSpace=2
|Text|Text:" "|Font:StaffBold|Pos:17|Wide:Y|Justify:Center|Placement:AtNextNote
|Note|Dur:32nd,Grace|Pos:b9|Opts:Stem=Down,StemLength=11,Beam=First
|Note|Dur:32nd,Grace|Pos:n7|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:6|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:7|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:6|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:5|Opts:Stem=Down,Beam
|Text|Text:"14"|Font:PageSmallText|Pos:-11
|Note|Dur:32nd,Grace|Pos:3|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:#1|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:-1|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:-2|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:-4|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:b-5|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:n-7|Opts:Stem=Down,Beam
|Note|Dur:32nd,Grace|Pos:-8|Opts:Stem=Down,StemLength=10,Beam=End
|Rest|Dur:4th,Slur|Opts:VertOffset=-3|Visibility:Never
|Note|Dur:4th,Slur|Pos:n-7^|Opts:StemLength=6
|Bar
|Note|Dur:Whole|Pos:n-7
|Bar
|Note|Dur:Whole|Pos:-8
|Bar
|Note|Dur:Whole|Pos:n-7^
|Bar
|Note|Dur:Whole|Pos:-7^
|Bar
|Note|Dur:Whole|Pos:-7
!NoteWorthyComposerClip-End
Worst problem I see is the funny tilt to the triplet bar in measure 9.
I put discrete page breaks in. You may need to adjust margins a bit to see what I am seeing.
Note that this is not how I would normally add space between notes. For this piece I would use a layer and "white rests", but that would make the example much more complex.
Plays pretty well too.