Sorry, I’d like to stick with things I’m at least familiar with for this exercise!  Thanks for asking, though! 

I’m publishing this just to answer anyone else who might have been wondering! Suggestions/requests don’t have to be ds9, but it should be something I know! Feel free to ask if you’re not sure. I have a few Trek ones that are a little borderline and I’m not sure if I’m doing because I honestly don’t know who the characters are to read their names, haha.  This thing is all about practicing colors and brushes and approaches for me, so I don’t want to stress horribly researching and finding reference for something I’m not familiar with.

Apologies and thanks for understanding!