This is my next project. It's a stol Agricultural aircraft but I don't know what I can do to improve it so if you have any suggestion please help me.

Should I publish this? I'm going to england by car from Italy for RIAT, Farnborough Air show and Scotland Air show so I can't publish anything for 25 days. (This map is by me but I'm not going to publish it because I can't get the collision working)