Looks pretty good! Maybe a bit of a bounce when it hits the ground, and have the wheels go up a bit? Don't know if that's possible with the way you have things set up, but it might make it a bit more realistic. I like the style of it, and the dust clouds.
cheers 4 the tips , yeah as it was my first attempt I was jus practising ... yeh I will try n make it more intersting.. needs alot of work especially with the wings..(fans) rotating tht wud be a challenge but cool/.