I've made a Minecraft Texture Pack and was thinking of converting it into a Platform set. The thing is it's 64X64 and I'm not sure how useful that will be.
Other things I'm wondering are what shape blocks are needed for a platform and how should the layout  of those blocks be if I have many different types of terrain?

I've uploaded my dirt/ground to show what shapes I have done so far. I'm thinking about adding grass to the top and corners of the dirt block. oh the grid lines are set in 32X32 just to help with editing.