With great soundproofing, even a beginner acoustic guitar can sound good on your recordings. I want to talk specifically about a few things you can do to improve soundproofing in your home studio, but if you’d like a bit more information on acoustic treatment, check out this Flypaper article on acoustic diffusers.
Let’s say that you’re mixing a project and it’s arrived to you with phase issues built-in. You have a natural snare recording, but when you turn up the accompanying trigger track, it sounds awful. Usually it’s the above comb-filtering and/or a disturbing lack of low end. You can start by flipping the phase button, and see if that gets you where you need to be. Alternatively, you can zoom in on the waveforms and see what’s up.