I'm not an artist or graphic designer, I just like making maps...and although there are tons of great symbols for free download on Dunjinni and other spots, I'd like to try my hand at making some myself (or converting existing front facing images into a top-down view).

Lets just say for the sake of argument that I wanted to turn this image into a top-down view...

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Wondering if anyone can point me in the right direction of a program or method that has a reasonable learning curve.