This is my first attempt at a "seeker" but unfortunately didn't come out the way I wanted. However it looked better than I originally intended, so I stuck with it. If you're wondering, I will post an instructable for my mini Thundercracker soon.
Step 1: Here Is Thundercracker
As I said I will post soon.
Step 2: Anyways, Time for the Arms
Step 4: Don't Forget About the Back
Step 5: And Finally the Main Body
It can be any minifig helmet. I just wanted an awesome display for my awesome helmet.
Step 6: You Do the Hokey Pokey and You Assemble the Plane...
Step 7: Transfooooooorm!!!! YAAAAAARDHJHTRDFGYYTEDGUYY!
To lock the limbs in place, pull out the pins slightly as shown. Hope u njoyed!