Thanks everyone. It is so encouraging to hear the positive feedback, just what I needed at this point!
The overall design was something that I drew out first. I basically drew the colors I wanted and the layout and then bought all of the fabric in one fell swoop. Piecing was done intuitively. There isn't too much detail in the piecing, which is probably why I was able to actually finish the thing. :P The entire back is pieced as well with a little bit of similar patchwork thrown in.
When I brought it to the longarm person, I couldn't find a pattern that I liked. I did like the meandering, freehand looping styles but I wanted it to be geometric. We worked out the squares and I'm really pleased with how it turned out! It was a really great experience. Definitely something that I want to continue developing.