Understanding your target audience helps you gauge what type of content sells you the most and what quality about you keep people around and engaging with you.
I don’t really get color psychology though. I’m a sucker at coloring, thumbnail choosing and stuff like that. I mostly just get an image from pexels or any other free image site out there, but I’ve recently seen designing your own covers just adds a bit of professionalism to your post and is generally more attractive. I guess that’s something I’m going to have to work on.
Great tips man, and have a good day!