Any pony race (earth pony/pegasus/unicorn/alicorn)
Feminine characters only.

Additional edits and/or linework changes are discussable only if the winning bid goes over $60.

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A little scene inspired by the picture:

After a short period of hesitation, standing in front of a rather big pool of black goop, slowly moving on its own, thick and sticky enough to make specific noise... FInally, you make a first step in your short one-way journey into the pool, followed by another, and another, dragging your legs through the thick and rather cool substance until you end up in the middle of the pool. The goo immediately started to crawl up your body, enveloping more and more of it. You reach down to touch the surface, overly excited, and end up with your hands covered in a thick layer of the substance, with it now also spreading up your arms too with a thick strand of it getting pulled up as you get back to vertical position. It keeps spreading, and there's no way back for you... But you love it.