Dude... Practice. Practice. Practice. I have played this game for 8 months and I can whip out 8 cool planes a day. Look in more of my posts to find a funny story!

in a nutshell, fueslage and prototypes

sry m8 b8er g8 gud m8

You should try making models they are really popular, good or bad

I can assure u will have some ideas.

Fuselage blocks + nudge + scaling mod/xml editing.

It depends on what you mean by a cool airplane

Fuselage blocks