These are some artists who work in various parts of the industry that I think are pretty fucking good at what they do.
This is my personal favourite artist, I really admire the painterly style that he manages to capture digitally. Check out this guys website/portfolio etc, it’s a good example of a solid portfolio and great work.
Mills Art - HND Games Design 
It’s nice you have put other peoples art on your blog, maybe you should add some of your own art work and compare with other artists.