This is a clear video showing how to easily draw a 3D letter 'B'. First of all you start by just writing the letter 'B' normally; and then you double outline all of the lines you have drawn, both inside and outside of the letter. Color it in with a block color for a 2-dimensional letter. Then its time to make it 3D! In the middle you just add lines parallel to the 2D letter, and also around the top and left sides of the shape; color this in with a darker color, and voila! You should now have a perfect 3D letter 'B'.