Digitalizing Sketches Tutorial

I hope this comes in handy for someone! If you see a typo and find anything confusing about this tutorial, please leave me a comment and I will fix it! Thank you!!
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This is a tutorial showing how I make my artwork!

I mostly taught myself how to do this, so I'm not sure if my way of outlining digitally is commonly used or not. I scan up pencil sketches that I draw, outline them in MS Paint, clean and color them in Adobe Photoshop, and then proof check and finish them again in MS Paint.

The Outlining part is very time consuming. I've had pictures that have taken over ten hours just to finish outlining them!