Fantastic!
The sketchbook doodle style artwork really improved the expeirance, especially when combined with that retro music you had playing in the background. It reminded me of the times I was bored in class and doodling away to pass the time. The humour was wonderful and I really had to laugh when the Sewer Boy appeared and you can decide to just eat him. This is a great first start, wish you luck with your next endeavour. :)