How do I make the seams of a large piece of replaced drywall look even with the existing drywall.

With some help from a friend, I tried to DIY some drywall. It was in a bathroom and due to some plumbing, we couldn’t get it flush. Because of the time frame of the project, I can’t redo it. I’ve accepted it and it’s not in a hugely visible area so at this point, I’m just trying to get the seam to look even even if the rest of the wall is a little angled. Even though the bottom of the wall will still look slightly angled, I’m thinking of just trying to use mud to great create an angled transition from the existing drywall to the new drywall. I think it’s going to take three coats of mud. I have one coat of mud up and am trying to figure out if I should put mesh on with this second coat and then try to create the angled transition with the third coat or create the angled transition with the second coat and put the mesh on with the third coat. I’m thinking second coat, but would like some feedback on my plan. Thanks