Topology of 3d models?

Question

3D

Hello dear forum users)
For a year now I have been selling 3D models on cgtraider and turbosqid.
For some reason I don't understand, some are sold all the time, up to 3 times a month, some were not sold even once) Well, that's not the point, tell me how to figure out the correct topology? My polygonal meshes are very dirty, for example:

Well, just from myself


What is the name of this thing, otherwise I can’t even google information about the correct modeling with a clean mesh. Thank you )

Answer 1

There are two main rules:
Don't make a "sun"
If a polygon doesn't define a shape, it's not needed.