Sometimes the details of our illustration look great, but then when we step back and look at the composition... it's a little boring or muddy or crowded or our eyes wander away from the parts that looked so good up close... Where are our focal points? Why doesn't this illustration grab my attention and hold it? Composition can make or break a piece. Here are some links that show examples of good and bad compositions and describe why certain layouts are more successful than others. Various tips and rules are described and illustrated. I hope you'll enjoy these as much as I do.
Composition in art as described by wikipedia (this link is a little boring): http://en.wikipedia.org/wiki/Composition_%28visual_arts%29 you can skip to the good links below and come back to this one later if you want.
concept art composition tips with examples: http://www.cgsociety.org/index.php/CGSFeatures/CGSFeatureSpecial/phil_straub_composition_tutorial
23 pages of paintings and composi