I havn't played it, but it looks... well... better than my first level. I never did release it. It was mostly a bunch of squares. And yes, I use the "engraving" thok barrier thing too.
Don't worry, all mappers get better over time. It happened to me. Well, is happenning, I should say. I'm still not that good.
Anyway, good luck on your next one, and I can't wait to spindash in place. =)