well if you still have access to your deer you can use the nifty little score sheet that is provided by HNI found here http://www.whitetaildeer.com/howto/score/score.asp

All you have to do is follow the chart at the top that tells what part of the antler is what, and then punch it into the corresponding spot on the chart...once you get all that apply to your deer hit the calculate button at the bottom

All you will need is a very flexible tape measure...and maybe an extra set of hands

Hope that helped!