very awkward controls, forcing everything to the left hand. keyboard + mouse is standard for PC, I suggest looking at battlefield/warrock(does it still exist? well, that's where I've had most of my flight time.. good times) if you need inspiration.
right away I can suggest putting fire on M1.
WASD, EQ turning should be quicker for a better game feel, IMO. I tried shooting at the blue guys but I'm not sure who the enemy was.
I dunno how you made this game 6MB, impressive anyhow.
The graphics during flight are nice as well as the basic UI crosshair / targeting elements.