Since you are going to try F/T, pre-scenting will be important. I also recommend using some type of tongs to present the mouse instead of your hands. Even after you heat it with a blow dryer or heat lamp, once it starts cooling off, your hand will still be at 98 deg. Since your fingers are about the same size as a mouse, and they smell like a mouse, and have a good heat signature, you snake might mis-judge the strike. If you don't have any feed tongs you can use some of those cheap bar-b-que tongs from the Dollar store. It just puts a space between your hand and the prey. Also if you lay the mouse under a heat lamp to heat it up, don't leave it there too long as to start cooking the mouse. I prefer the blow dryer for about 30-45 seconds. Here is a video that may help. Good Luck...
YouTube - 8 Ball Pythons - Feeding Lessons