Couple things I would say. First off I'd save at a higher quality version, as there's a lot of artifacting on the text especially. Generally, you want to use save for web and set the quality on about 70%. That way you get a reasonable sized file and little to no artifacts.

In terms of the text - it looks a little off. The text appears to bow slightly so that the bottom of the g is above the line, which looks most unusual.

Lastly, in terms of the grass there's a slight problem in that the bottom of the grass at the back is visible, whereas in reality in a field of grass the grass in the front tends to cover up the bottom of the grass in the back. Some of the best grass beush usage I've seen was in this recent wall - http://www.animepaper.net/wallpapers/Latest/entry12293/ so I'd use that as a kind of inspiration.

Hope that helps.