A few thoughts...

• I like the image :)
• The thumbnails is ... well, weak. The subject is good (the Dragon eye) but it is so expanded that it is fuzzy. it looks like abstract art.
• There is simply no help for the fact that people like to look at pretty, sexy things. This means pin-ups will almost always get more views. That's life.

I myself was really proud of this render, but I knew it wouldn't get anything like the page views ... but it took every bit as long to learn how to do it as any pin-up I ever did.

Chin up and well done!