I'm making a box on my cylinder for my Luke Lightsaber modeling practice but by doing so I always create a pinch around the attaching points like
I'm new to blender and I just finished blender guru's beginner tutorials and the anvil tutorials. It's always painful to perfect my mesh and vertices but I really want to learn how to solve these sort of problems so I'd be more than grateful if anyone like to give me a hint, instructions, or even just pointing out the problem (cause I can't even tell.) Thanks!