Now THIS is something!:D
Compared to the blue banner of yours I just reviewed this is def something i can approve of!
I normaly wouldnt tend to like a blue line deviding a banner or signature like that, but this actually looks pretty decent! I'd suggest you make the line fade out in the left side so it doesnt feels like it's one complete picture rather then 2 individual pictures glued togeather.
The colourscheme kicks ass though. Thebrown colour fits perfectly togeather with the calm blue background, and the orange letters compliments the banner as a whole as well. Making the roots of the tree in the "i-forgot-the-name-style" is pretty fucking neat as well.
The font is cool too. It's generally verry anonymous compared to alot of other fonts, and thus it fits perfectly into the clean look of this banner. Birds, clouds and plants are a great addition as well. Thumbs up on that:)
I'd suggest you do something about the buttom though. It's too plain. Add a gradient or something... Not quite sure, but just do something:P
Overall it's a really nice banner!