I like seeing the "How I Did It" in-progress shots too. Hrere's a link to the previously completed Conqueror, with shots from basic parts on:
http://groups.msn.com/ModelersAndHobbyForum/starfleetmuseumship.msnw
I usually just look for parts that are close to what I want, and start sticking them together. In a lot of ways a real toatal scratchbuild would be easier, but the found shapes can get you started quicker. Here's the parts breakdown for the Torsk:
Hull- a somewhat egg-shaped pencil sharpener from the dollar store, stretched about 1/4", a section of plastic tubing, and a wooden craft store egg.
Warp pods are a couple of small, brittle plastic pill vials, with panel light lenses at the front to round them off. I drilled a hole in the end of the lenses to make the hollow for the inner domes, which are parts of a dollar store top. Tapers at the end came from some toy lava light keychains, backed with Evergreen tubing. The end caps are the end of a helicopter rocket pod and more evergreen tubing. These would have definitely been easier to turn on a lathe, bt I was traveling when I made them and did not have the Unimat with me. ! Hope this helps,
Andrew