The animated guy looked pretty good although I thought the animation looked more like the guy was skiing, snowshoe-ing or speed skating.
As for the initial look.
I'd suggest paying an artist to do a simple mockup based on your designs. There are tons of fantastic artists on deviant art or other pixel art sites where you could post on the job thread to get quotes. Having someone design a simple mockup like you did will help you a lot since you can then cut up those elements and reuse them fully for your prototype. (I am taking 50-100 bucks here nothing that would break the bank).
If this is simply not an option then I suggest studying all the threads where they talk about game art esp stuff regarding colour wheel.
The beauty of programmer art is that people don't expect it to be great, but if you try to make something look "OK" it can really turn people off.
This is very interesting, because it's something I had not even thought of. I have a number of thoughts about your post, I'll try to be as clear as possible, but it's a bit jumbled in my head.
1. Paying somebody never appealed to me. One, I don't have the cash to hire an artist (for a full game). Two, even if it doesn't look amazing, I want to increase my own skill. HOWEVER, paying for a mockup actually appeals to me a bit more, because it can give me a better sense of art direction, which I'm fuzzy on right now.
2. When I say I am aiming for "OK" it doesn't mean that I don't want my game to look as good as possible, I'm just being realistic with my abilities. I wouldn't hire somebody to do the art because I want to improve, but I do want to make the game look appealing.
So, I guess that leaves me with one big question: Would having a well-done mockup by an actual artist actually help me with the art for the game? Thinking past the prototype, a mockup would certainly help solidify the art style, but there are a good chunk of animations / backgrounds I would have to work on myself, and I don't know how much help it would be to have that mockup for reference.
What do you think, can a non-artist like me effectively use a professionally done mockup to elevate the art in the game? Not to perfect level, obviously, but at least better than I would have done without it?
I appreciate the comment, btw, very helpful.