I like how everything in your signature and avatar match, I also like the colour green! The only thing I'm not a big fan of is the text on the signature. I don't know why, but it' just doesn't appeal to me much. perhaps try putting a border on it? Plus, I think the little buttons at the bottom should be bigger, so that they stretch out to the whole signature's length and finally the border on the first picture could be thinner so that it looks better with the bar underneath! But, I like it very much anyway!

Avatar 9/10
Signature 8/10