You are more than welcome to blog about this and use my images. I did not make these or the boxer to sell though did offer them both with no takers. I did them out of shear entertainment and like you said I had extras.
I really, really like this, and the blue boxer custom. The best thing is the idea - when getting a duplicate collectable, most people would just accept the fact and have two identical minifigures, or sell/trade them. But you made great customs out of them. I don't really care if you bought the bonus figs and did all that for money because the idea is still brilliant. I wanted to blog about them to spread the idea, but I don't know if you would like that - my blog is currently only available in Polish.