Disappearing 4-Patch Quilt

The project that started out as a total experiment with a couple fat-quarter I didn't really like all that much turned out to be quite a nice quilt - if I do say so myself. I took a tutorial from a blog on how to make disappearing 4-patch blocks, added a couple of the techniques I learned in the Basic Quilting Class #1 and ended up with a quilt that has 4 hearts with a postage stamp in the center. Or at least that's what it looks like to me.

I did the quilting myself - nothing fancy but remember this was an experiment.

What do you think?

Here's the back: