Sounds like you got it goin' on Eric....Only advice we can give you is to go slowly.....make the changes in small increments, and be sure why you are making the change. Lastly, spend a lot more time LOOKING AND FEELING than cutting.
Spend some time looking at custom rifles, and try to see what makes the really beautiful ones stand out from the others. The differences are usually so small they would need ot be measured..... the straight line flowing into a curve and back, the shape and flow of the grip, the flutes in the comb, etc. We are pretty sure that if you can see these things you will be able to put them into your own work.
We use rasps, planes, spokeshaves gouges drawknives ...you name it. Even used a small carving chainsaw to take a bunch of excess wood off a thick blank. Don't matter what you use to take it off... just make sure you know WHY you't takin' it off.
Good luck, and stay in touch;
D.B.