Siblings Fight - Sketch Maybe WIP?

So I did this sketch last night, I want to finish it, but I don't know how to start xD

This is suppose to be Jazz fighting with a long lost character...and sib Kazz omg anyone remember him haha

I like how this sketch came out, I don't know when I'm going to start it, so I shaded it, like I usually do with sketches

Man someone commission me a sketch, I like doing these.