psd coloring are really useful. They make your graphics look less dull as you can see in the example:
And fortunately, they are very easy to make. The only things you need to use are the adjusments.
Tutorial:
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Lost girl ⭕️ a graphic help book
AcakIn which I, a 24/7 nerd, tells you stuff that she wishes she had known in the beginning. Gorgeous cover by @YusraUsman95