Hey, one more problem; I had to cut the head in half when merging the vertices because it made it much easier for me. That all worked, but now I am on the body, I cut it in half too. The boolean union is not working whatsoever now though. I went back and tried to put the other side of the head on but didn't succeed. Any suggestions? Can it not work when it is cut in half?

I think I'll just take it slower and figure it out.