yes,,, great advice from above,,
I think just make the bow as is,, and keep it simple,,
no need to complicate the process, once the arrow is shooting you will be happy,,
not sure how much wood you have to remove,,
I usually use hatchet or machete, if I dont have a band saw,,
as you start to make the bow the process will become more clear,
the twist is not an issue at all,, proceed making the bow, thats my suggestion,,
we are always here if you get stuck at some point,,