I like them both. Next time don't let the edge of your canvas become a barrier...by having it breach the edge of your image plane the viewers eyes become more free to roam the entire work, rather than just the area that has been sanctioned off for them- in other words, far more possibilities for personal interpretation.
Despite what some may say as far as "I could do that" and "it doesn't look like anything but a mess" (and we all know that a lot of people look at contemporary art that way), the fact that people are talking about your work means that it is successful as an artwork. The whole point of art is to invoke an emotional response, and even if that response is negative, it's still a response, hence a successful work. Be proud, my friend!
It looks good, but it doesn't really do anything new. Then again neither has about 99% of the art that comes on the market anyways so you might be good to go.
10' would be bigger then my wall. 🙂 The poster board is 24x22." I would probably do a bigger canvas when I make the final product, or maybe two canvases side by side.