Positive / Negative Space - 3D

I made this in my 3D class - just finished it on Wednesday actually. In this picture the paint is still a little wet but that's okay.
We were studying Positive and Negative space and I had to cut an object (positive space) out of wood (negative space) and then design them accordingly. My original idea only had one piece - the piece with the positive space sticking out of the negative space. However, Professor Garn thought he would challenge me (and he sure did!) and suggested making the other two pieces as well (another design idea I had come up with, but representing a leaf rather than a floral).