Since this hasn't been filled yet, I thought I'd take a wack at it. "Better" is really subjective, so I kept the original design and added some shading. Then I changed out the eyes. Lastly, I changed the nostrils, though I'm not sure I did the right thing there.
I also changed up the color scheme, while keeping the green for the text. This may not be what you want.
I had another idea for the logo that doesn't feature a maniac face but I think it may get the idea across better.