This web page will present to you many information and also works of many artists. I find it awesome.
Link: http://www.designmuseum.org/

To fit colors to the photos, I divided it into many parts and added each to a separated layer. That will help a lot becos u can make comparison and correct them easily. The background. hair, face, eyes, lips, the vest, the shirt and also the tie, each is put on a layer so u will have 8 layers to modify.