Firefly custom (so far)

I'm not gonna say much about her because this is possibly a WIP.

So far the mane and tail have both been sculpted and baked, but there's a bit of a problem: during the baking, her head seems to have cracked from the heat from the clay being on it. You can see this in the two top pics. The second one on the left side isn't as bad but it is visible. I'm not sure how I will cover it up, any ideas?

I have also painted her cutie marks on both flanks. How did I get them to be so sharp? Well I only needed one color: blue, and what I did was I put tape over her flanks and then used an exacto to cut out the lightning bolt shapes and then use that to make the bolts be straight enough. Believe me, it's not as easy as it looks!

I have also considered giving her some angry eye brows and maybe repaint her eyes. Firefly actually has purple eyes so it would be more accurate.

The reason I'm showing you guys this is because I am thinking of selling her on eBay as my first custom to be auctioned and I wanted an opinion from a few folks on what the price should be. I know those cracks and her eyes are probably gonna lower the price, but what should the exact price be? For those of you in the know or if you have sold customs before, please give me a price and maybe some advice on what I can do to fix the cracks and stuff, that would help me out.