In your original post, you mention various things and ask "is this correct"? Personally, I wouldn't look at it that way. There's no "right" or "wrong" way to use all these tools and settings – it's all about establishing your own style and figuring out what looks good to you.

Of course, there's nothing wrong with asking for feedback. Just keep in mind that it's okay to do things your way, even if that differs from someone else's.

From what I see, you're making a really good start. That render is fantastic!