Notationwise first page:
- group piccolos and flutes with sub-brackets (the same goes for cor anglais and oboes and so on). You need to label which of the three flutes belong to which of the two staves – again, goes for all winds. Label each entrance whether it's all three 'a3', just 1&2 or only 2 for example. Use those designations and write more single stemmed to avoid clutter. Piccolos bar 4 and clarinets bar 5 could both clearly be written in a single stem. Bottom line is: be clear on your distribution.
- horns first entrance just write 'a2' for example and don't write those notes in bass clef. Which leads me to: is this concert or transposed? If you don't use key signatures, it should be clearly stated.
- remember to put a dynamic at the beginning or end of a hairpin. You don't need one in the end if the hairpin has a modifier like 'molto' or 'poco' for example.
- You have a lot of white space in the margins. Decrease that and increase staff size. Make room between the staves so no text or notes get squashed.
- fewer bars per page!
- place a bar number on every system. with fewer bars per page and rehearsal mark, that is enough and clear. Also loose the circle enclosure.
- Timpanis bracket together (in this rare instance where they actually bracket). And don't write their pitches. Don't tie tremolo notes.
- bracket ALL other percussion and remember that barlines run through every bracket.
- don't use symbols for mallets and don't write 'wood'. Write soft, medium or hard mallets or sticks. (soft wood made me giggle! - on zooming in I realized it said soft wool and only THEN noticed that you had piattis as well - label them! don't use symbols.). Same goes for the cymbal symbol. Write 'Susp. Cym.'
- place the ff's in percussion carefully.
- break those string slurs up.
- what does spp mean in strings? If you mean subito then write 'pp sub.' And don't write the sub. in cello/bass since they didn't play anything before. Also don't tie tremolos there.
- Strings go p<sp? Doesn't make sense. Also they crescendo over an eight note rest? Careful here.....
- don't use 'sim.' for anything. Copy it out. That was only valid for handwritten scores.
So that was only the first page and glancing through the next couple of pages I can see these points are valid throughout. Remember also to number players on staves on subsequent pages and remember to use octave lines for harp when necessary.