Umm.. May be you shold try with something a bit less complex than drawing peolpe? That is to say, you make new and new pictures (even with animation) without refining the previous ones well. Try to choose one idea you`d like to draw, and draw it without any haste. I`ve been doing my avatar for 21 days so far (not every day, though, but nevertheless) and my first work I started in January is only ~20% completed.
So. Start with something simple, make it accurately, do your best and don`t rush to ask for a help until you feel you`ve run out of your skills. Your problem is that you are trying everything at once and don`t take it serious.

This background is awesome. I can`t remember any mobile game backgrounds to be that good.
The idle animation, however, seems a bit strange to me. Not the pose, but how his body moves. I think you overdid it. The movements should not be not so.. mm.. big, also you should remember that he is wearing a suit. That means the movements must be less visible. But here even legs are moving due to just breathing. 

Very nice, I like it. It reminded me of some good games like Canabalt and Playman ER. Even the black floor doesn`t look weird.
There are some things, though, that do look weird. First of all, I think if you make something in pixel art style you shouldn`t only add it (unless it is kind of an easter egg), you should make everything in this way. I`m talking about the sun, of course. Also the clouds seem to be off since their pixel size doesn`t match the buildings` one. They are also blurred, I see. I`m not sure it is the best decision to make them not-eye-burning.
Then, some logical aspects: the crack-holes on buildings (especially in the one right to the sun and the most right ones) have the background colour like there are no walls behind. The fence (left) is OK, the building in the middle is also alright as it seems to be totally destroyed. Use another colour or add the destroyed walls (of another colour, again) behind the crack.
Then, I guess you drew all the layers separately and just connected them in a gr. redactor like Photoshop. The problem is that sizes of the pixels don`t match here, too. It is seen well on the wires. may be you did it specially (or you just don`t care), I don`t know, but I think the picture would look more harmoniously with entire scale of the pixels.
So, now it is a good background, but it has lots of things to improve and make it better.

P.S. Sorry for my English if it`s too bad (I feel it is).

I`m not sure if the anvil is too overturned or it is supposed to be set like that, but I see only one important thing: why does the blacksmith pulls his hand back instead of just lifting it up? It doesn`t seem to be very natural. May be you tried to show how heavy the hammer is? Anyway, even if it is kind of his style of forging, it lasts quite long for such a heavy thing as a hammer.
Also I would add an animation of the air distortion over the smoke hole.
Everything other looks fine, good work.