Hey mate, not bad at all!
Firstly, you shouldn't build to win, build to improve, support your team, and most importantly, have fun!
Regarding the build, the #1 priority for any build should be the presentation and the photography. An amazing MOC will slip through the cracks if it is poorly photographed. Photographing in bright lighting with a steady hand/tripod would really improve things.
Still, from what I can see, I really like the activity and festivity that is going on. Great work!
