Another thing you can do is to use the same image for a bump map, it takes a little adjusting as far as the amount of bump to show, but in the final image it seems to add a little more 3D to the alpha plane. Also, in your image, all the legs are on the same level where they go into the snow. If you could somehow adjust something to make the legs go into the snow at different levels, I think it would help look a little more 3D. Just my thoughts & good luck . . . Mark.