Can i get some 3d's

Ive been working hard on my latest and greatest new coaster, Untamed Beast, and i wanted to know if someone could make me some 3d's. I have no idea how to make 3d's so hopefully someone out there can help me out.
Im not asking for anything big.
3d's i could use:
2 or more Rock formations
Fallen trees
I want my station to be a big rock sticking out of the ground.
heres my station-http://www.nolimitsdevcenter.net/i39129

If someone can help me with this i would greatly appreciate it.