Hokay... here's a rundown of things that you need to fix:
First, I
strongly urge you to double all the note values in the
Andante non troppo (quarter=84) sections - keep it in 4/4 and make it quarter=168 instead. That move alone would greatly increase the readability and neatness of the score and parts.
If you decide to not do (1), you need to do a lot of clean up. Several things I see: single 16th's (almost a universal no-no unless the tempo is exceptionally slow) - use a staccato 8th note instead. In the same vein, any dotted rests in 4/4 should not be used.
A larger issue is that much of the time your beat pattern is obscured due to beaming issues and irregular phrasing. In 4/4 time, you should
always be able to see where beat 2, 3, and 4 are (unless you're using extremely simple rhythms, like half notes) Here is an example, straight from your score (m.21)
Notice how you can't determine where beat 4 is... the dotted rhythms obscure the beat.
This is how it
should look:
You can see each beat and the music is easier to read.
Now this is how much better it would look if you doubled the note values:
There's no mistaking how this is to be played. This is crystal clear, and even at fast speeds would be easy to both read and play.
I would recommend you go through your entire piece and re-enter all the notes to look like that final example. It would make the piece much more presentable, much easier to read, and it would give both the musicians and the judges and much more favorable impression of your work.