Forget the solid between the VERTICAL stripes, did I tell you that the stripes were vertical? Seems that's a VERY important point to leave out. They will be as thick or as thin as you like. I was thinking 2, 3, 4 inches wide but you could go even wider.
Pixie #1 choose the hood shape that looked best and I have to agree with her taste. It comes off of the back and sides of the sweater, vertically coming around to the front.
If you want to go with the beaded buttons (below post) you can make those, choose your own, or skip the front band altogether and toss in a zipper. With the join as you go method you will also be able to try your sweater on. PERFECT! Diagrams will help you with placement and SHAZAM, gorgeous, one of a kind sweater that only YOU will have. See, the more I mull over patterns the more I can "see" the design that the puzzle is making. The more the design comes to me and the pattern is made.