hi, please watch my vieo and give me some tips on how i can improve, before my competition next weekend please dont be to harsh though i know im not a very good rider :L
Looks good from the first few mins I've seen. Just a word of advice though; as your arena is much bigger than the standard 20x40, practice said test in a marked out sized arena (use poles or dressage boards). This often helps with pratice, as don't know about anyone else, but I always go 'god, this is a tight arena', and always seem to catch me out!
I would say try and relax your shoulders a little and bring them back slightly in trot.
Also think about drawing your elbows into your sides, that will bring your hands up slightly and think about holding wine glasses, making sure you keep the wine in the glasses - keep your thumbs on top!
not a bad over all picture. It might be just the angles of video but it looks like your saddle is too far forward and is tipping you back slightly, this is making it difficult for you to keep your lower leg back.