Step 3: Draw edges on the letters
Step 4: Finishing up
Then color in the letters how ever you want. As you can see, I did A-K in pink with black edges, then the rest white with black edges. Its ok if you don't color the letters but I do recommend coloring the edges so it will look neater (though this isn't my neatest work ever)
AND THERE YOU HAVE IT, some beautiful 3D letters!