These kind of look like photos and drawings put through a filter in photoshop. If he did draw/paint them they are very good, but they look suspicous. However, maybe that's his drawing style.
'suspicious' is an understatement. Photoshop filtering is fun, but not when you don't cite the source of the photo/painting you're editting.
You can find one of the pics in it's unedited state here:
http://www.acerb.be/wordpress/galeries/
and the other here:
http://www.hgjart.com/gallery.asp (it's the rightmost pic on the top row)
edit: http://hgjart.deviantart.com/art/Avatar-Dragon-162017938. Also, the artist's name is Guangjian Huang
http://psdcollector.blogspot.com/2010/07/dragon-art-30-most-outstanding-dragons.html