I have to agree that I'm also not overly fond of the mountains. They look a little blurry and don't really blend well with the other elements. However, as Arsheesh said, you have to try new things and sometimes it works and sometimes it doesn't.

The colouring is very attractive and vivid and I absolutely adore the celtic border. I also like how you've done different types of forests. The ground texture and the hills look great too.