The key to producing great digital painting is TIME. Most people who are new to Adobe Photoshop will stop after the first round of applying colour to their illustration. By building up separate layers of colour, the “beginner” art will begin to look more spectacular. The main power of doing your colour work, or any work for that matter, in separate layers is you can control virtually every aspect of the final look. With some experimenting you can get some interesting and sometimes unexpectedly great results.
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