Rask - Yea I agree with ribcage. If you smoothed the edges a little and made them more defined it would look much better I think
Ribcage - That piece looks sweet, the colors came out great. I think someone already said it but the middle of your E looks kinda off.
The Z looks ugly but idk how to fix it while still making it flow
Top of the L should be a bit bigger and in toward the I a little.
Other than that, crits?