the colours are good but thats about it, you need to work on flow alot the flow is going in all directions and makes t look weird, you also need to work on lighting, depth and text, look at some more tutorials to see how to work on this.
Toadstool rules. I'd agree with Lastcrime, the surrounding design doesn't have a good flow. There are a lot of different abstract shapes that don't blend well. Try honing into your favorite 2-3 techniques and focus on how they blend from one to the next. I'd also like to see more of a "show time" feel to the sig. Might play with circles since that's a very defined shape on toad and could have a spotlight / show time feel.