“Bad” I can’t say, you took no risk, and thus made no mistakes, but also displayed little skills.
Using triangles for the bodies is a good idea, as triangles are a good shape, you can do anything with triangles. Have you consider increasing the amount of triangle, as such?
I dropped the round heads in the last one, because honestly, circles are an overrated shape. And you can do anything in triangles, why use anything else?
You can find any number of foolish ressources online, none of them tells you the truth about triangles. All sorts of websites and yet more websites try to teach you how to draw, without even mentioning triangles in any of their tutorials.
It’s the sassy pose…