Beautiful colours and exposure excellent detail. The tail slightly OOF but high magnification. Faint pale shadow on the right side - I think I would blend it to make it disappear.
Pretty neat pose here, and I like the mossy setting. I do wish, however, that the oof FG was not there and I agree with Jon about the whitish area at right. A touch aggressive with the sharpening as posted, but great job focusing on this quick little fella.