User blog comment:Kida155/Things to Keep in Mind When Taking and Uploading Screenshots/@comment-7697305-20131010195446

Also, Invisibility Potions + Familiar Clothes are a very handy combination when you are attempting to take a screenshot showing something off that doesn't pertain to your character itself.

(Regarding jpgs vs. pngs: I'm not an expert on this, but what I tend to do is take a Steam screenshot, open it in Paint.net, make whatever changes, then save it as a png. Seems to work alright.)