How to customize icons for droid

I'm a complete newb and need some help from you wonderful experienced people. So far I downloaded HOME ++, Buttercut and some icon packs and changed some icons for my appz, but some icons cut off on the bottom and right side. Is there an app to resize these icons? If not, how can I extract icons from my Droid to edit the icon. How do you put transfer custome icons into the droid? I'm worried I might be the only one out there who doesn't know how to do this since I found no thread explaining this on any forums yet. Thanks for helping!
this info would be great...thanks for asking the question, and no ur not alone in the ignorance here...