Two main considerations:
1. Boots: Properly fitting boots don't hurt your feet and increase the amount of time you can spend thrashing yourself. I've gone through boots that didn't fit worth a shit and caused lots of foot pain, to boots that fit ok and worked, to boots that fit perfectly and cause no pain/numbness. Makes a big difference
2. Feet Strength: In snowboarding you use your feet A LOT to transition back and forth between turns. If your not used to snowboarding very much, or don't strenuously flex your feet a lot, it's going to take some time to really strengthen them to the point where things like traversing on your toe edge doesn't bug you.
PowderHound and TreeNinja