??? There are literally (At least on my old work) several anatomical errors, as well for perspective, object placement, coloring technique, panel placement, speech bubble arrangement, font size, the file size is wrong (Didn't work in a bigger size, just stuck to 800 x 1280) as well for its format (both saving in jpeg and not arranging it for Vertical scrolling).
As well, you said to post our worst comic panel, so that also means worse according to oneself.. such thing as perfect doesn't exists either. And anyone can simply dislike a panel, be it its not the vibe they wanted, it was bad in skill, a bad memory or just other aspects they see because they know their stuff.