8U PIXELING. Is a lot easier than a person thinks. Well, depending on what type of pixel art.
The detailed work

[Link to Tutorial]Simple work

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I do the simple work because I don't think I need to get too complicated with anything.
For the base of my Pokemon, I used 2 ovals. One for the fat gut of the body and a smaller one for the head. Then I connected them and erased the middles so it was one fat oblong shape. xD
Then I found a light source and picked a direction I wanted it to shine. I made different layers in PhotoShop for this. Shadows, main color, highlights.
8D