Ghosts and Goblins!  I like the colors (except for the moon), and I like the direction your going.  It looks unfinished to me though, like you're not sure how to zoom in and refine it.  The biggest offender is the floor tiles.  The medium sized tree is my favorite.  The small and thin trees look unrealistic in shape.  Even manicured trees don't look quite like that.  I'd suggest looking up poplars for the thin one.  The clouds look like they're melting.  Look up "contrast cloud" in google images, you should be able to find some good references for clouds that are back lit like you're going for.  The stars are incredible!  Love them so much.  I've tried to make a sky of stars that looked like that many times, and I've never once managed it.

This reminds me of some old mining towns near my home.  The only thing missing is an old quarry and a decrepit sluice building.   The well looks a bit odd though, that close to a river.

The table should have the same curve as the pillars and be oval not round.  That should fix a lot of the perspective.  The door looks like it's in the middle of rising from the ground because the bevels don't have a bottom.  Is that on purpose?

I've been using Microsoft Gif Animator to make my animations until I found out how easy it was to make them out of layered images in GIMP.  Both are free.  I would also like to see a beautiful animation cycle for this girl, but I think you'll need 8 frames to do her charming character justice.

I think the texture could work, but if you're going to do that you'll need to worry about priority.  How busy something is affects positive and negative space, and you'll want a contrast in there somewhere.  In other words, if you make the background detailed you'll want the foreground more plain.  I think you'd be better off doing some zelda style minimal details, like in ALttP or Minish Cap.

It looks like it's all leaning to the left to me.  Try turning it upside down and getting things positioned where you like it.