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Painting a Realistic Portrait for Loki
Under Drawing Effect, Photoshop Tutorial
This tutorial will show you the steps of drawing a nice Loki in an easy way. You can create your own cartoon artwork based on this skill. It will describe you how to use brushes to carry out the painting works.
If you think that traditional painting is too slow for making a portrait, here is an alternative method. You can prepare an image about your object, then you selectively hide your image part by part and use Photoshop brushes to carry out.