This is not a full tutorial as I didn't take pictures step by step. I was much too into the excitement of creating and actual pair of pants! Not to mention a shirt with a collar and everything! Holy smokes I am totally a pant maker! I mostly followed the Spider-Man tutorial in conjunction with the pattern/tutorial by dana-made-it. She gave details on how to make a t-shirt collar, as well as some other structural details and pattern.
I am pretty proud of this. It was a lot of work, more than I anticipated, especially with all the hand drawn webbing, but it fit perfectly and moreover Johnny was so happy. He thought it was great! He is 4 years old now, an I figure there aren't too many years in his life where he'll want to wear home made stuff, so I am going to enjoy it while it lasts.
Materials: red jersey fabric, blue jersey fabric, black and red felt for the spider, elastic, black puff paint