“I want to create good habits since I am early into my VFX journey and want to make it a career so, is this a good approach to something like this?”
Yeah, this is a fair way to go about getting particles to spawn for something like decals. From a technical stand point, you don’t have to use a second emitter, but could have render flags be driven from collision events.
I put together a responce to something similar question someone else had before. As far as, best practices, I think this is a pretty good method and you’ll get alignment on the surfaces at the end of the day.