I know how to upload an image to the uv image editor window along with unwrapping, but what if I want to make an image based on how the UV comes out? How can I save a picture file showing where all the uv edges are so I can draw on it to make a uv map? Thx.
In UV/Image editor window, use UVs / Export UV Layout. Select location in the next window and format (either .eps or .svg) from the dropdown at the lower left of the screen.
See this thread http://blenderartists.org/forum/showthread.php?t=184670