Hmm...
The shuttle looked really nice, however, this is just a copy of all those other versions... there already are thousands of them, so try to come up with something new.
I also had trouble figuring out how to go up.
PM me if you need a good tutorial where you learn really much from, if you really use it instead of copying.
I got a lot of my knowledge from that tutorial, and some other ones from the same site.