Okay, here's my 42 cents, and hopefully others will throw theirs in as well.
That's a cool chicken, mainly because it's weird and blue. The fact that it's a blue chicken should be played up in the description. WHY is it blue? What made you decide to paint a nontraditional color chicken instead of the usual white?
The fact that it's blue also makes the photo harder to decipher. It just looks like a blue and red blur if I pass my eyes over it quickly, which is what people are doing in searches. Perhaps a more direct natural light, and putting this one at an angle (like it's "looking into the future") would help? Experiment with it so that anyone looking can tell right away "oh, that's a chicken -- but it's blue!"
Consider putting it in a different category than Art Painting...it helps to have different types of items in your shop to get people in there anyway, but have you considered Geekery? That's a sort of catch-all category that can include any type of item. Housewares also works, if you don't feel this is geeky enough to merit Geekery.
For your tags, I would never search for "colorful art" or "chicken art," and I'm not sure what "dezdino" means -- your shop name? your personal name? -- but maybe you have a particular audience in mind there. Also, if I were searching for "oak tree" I would expect to find photos or paintings OF an oak tree, not ON an oak tree, so you might want to think a bit about how someone who's looking for art ON wood would describe it. Same with "wood painting"..."painting on wood", maybe? "1970s style home decor"? (Because so much home decor in the 70s was "alternative" types of presentation.)
You also use "funky chicken" in your tags but not your description or title. I think you should use that in your branding of this particular product, and describe it that way rather than as "lovely." To me, this chicken isn't for people who want "lovely" things in their homes, it's for people who want awesome blue chickens in their homes.
Consider the hipsters when tagging this. I think they would like this guy.
Finally, your description states that it could be a rooster or a hen? But to me, it has every marking of a rooster. I'd stick with that. Even if there are hens that look like roosters, you don't want to have to explain that, and there's no need to not be specific because nobody's looking for chicken art and then rejecting it because it was "only a rooster, not a hen." At least I can't imagine that happening! Plus, the more specific you are, the more you show you had a vision when creating this, the more it will seem OOAK and desirable.
