Right now, you are looking at "Part 1." It took me about two weeks to work on this picture. This was all sketched on one piece of paper. The watermark(s) were done with Photoshop.
Here's the progress before the final pic:
Step 1,2,3,4,5
There were small changes along the way, which worked out in the end.

I also have part two of the large group sketch. It will connect to the right of the first pic:
*update on page 2*

Here's the two pieces assembled right here