I have found a great tutorial that shows you how to draw Spiderman, but I use it as drawing the webs on his costume. I find it very helpful and think you will too. Be sure to keep practicing. If you want to view the original, go here: How to Draw Spiderman.
Here’s another part of the tutorial where it shows you how to draw the webs on Spiderman’s face. It’s pretty helpful just as I said.