Yes, that's what I was thinking. How do you feel about it? I mean about the smaller size. It still has the feel of a forest and not of a random leafy background. The details are a bit better too.
I think it'd be nice to use smart sharpening filter and play around a bit. If you want to have a little bit of a lighter feel to the signature you could always create a separate, clean layer on top of all the previous ones, paint some random big spots using a white colored brush and then play around with 'motion blur' filter settings. I found that to be a great way to lessen the 'heavy' feel of a graphic and add a bit of a feathery feel.
Also, I think it'd be nice to lighten up the colors a bit. Right now the signature has a feel of a very late 'sunset'. Also, ganbaru said it in the SOTM entry thread, about the text being less visible.
The sig is great and you did a really good job on it. Some tweaks and it'll get even better