Ahhh so to understand, the reason I get these issue as shown in this picture here with the arrows pointed at it is expected because dense mesh is the same shape as the low-poly just with a higher density that results in the defined shading. So subdiv modifier still came up with the same kind of shading. Yep i experimented…
This looks like the stuff I made when I was your age Just keep working at it. Refine, refine, refine. Also, finding tutorials on the net will probably help you out a bunch if you want to get better. A lot of the portfolio's on this site have tutorials with them so they're always a good place to start when you're looking…
I've been trying to define a style for a new project I'm spinning up (still learning Blender, but enjoying it so far). Accidentally put 8 chambers in the cylinder - itsafeature™!