Develop a procedure that you use every time when shaping. step 1, taper and hollow to create the palm swell. step 2, knock of the sides at an angle....etc...I like to keep everything angular until i have the rough shape that I'm after. That way it's easy to compare the lines from side to side. Then you can round the corners to smooth it out. Then, once you get your steps formalized, you can easily repeat them. At least that's what works for me. And use the contact wheel like Marko3 was saying. I don't know what shape you're after but the loveless video and SR Johnson sub-hilt videos are gold...