Hi Explorer!
I've been looking forward to the fanart thread since reading your announcement in the welcoming center (it took me a while to work up for the nine days in Scotland). I tried to edit your post so the picture would show up rather than the url. Usually this works by putting the url of the picture in image tags. For some reason it didn't work out with the picture. I have had the problem too with some of mine. I don't know exactly, but I think it is something about certain signs in the name of a picture to be displayed that way. Maybe somebody with more computer knowledge than I have can give some more helpful advice here.
I like the picture composition. Is the Cera taken from the beginning of the song "Things Change"?
Where did you find the background?
One piece of hopefully constructive criticism (to help improving your future work, not to belittle your current one) is that maybe the edge between the rock behind which Littlefoot is standing and the grass is a bit too hard making the stone look a little "inserted". The smudge tool of photoshop or some of the other tools could be used to smooth out that edge a bit.
I'm looking forward to see more of your work
