I just came accross an interesting blog – lines and colors. Well maintained, a wide variety of subject matter and a great resource for technique and criticism.
“lines and colors is a blog about drawing, sketching, painting, comics, cartoons, webcomics, illustration, digital art, concept art, gallery art, artist tools and techniques, motion graphics, animation, sci-fi and fantasy illustration, paleo art, storyboards, matte painting, 3d graphics and anything else I find visually interesting. If it has lines and/or colors, it’s fair game.” -Charley Parker

lines and colors Critique: “Sassone’s brusque brushstrokes threaten to break up the representational image, as if it were on the verge of dissolution, but he holds back just enough, and includes enough elements of visual interest in his paintings, that they work both as representations of real scenes and severe abstractions from them.”