Patching and Plastering - Drywall - Mesh Tape Mess Up!

I could use some advice - other than don't do that again. I recently drywalled 2 small rooms in my house. I used fiberglass mesh tape and premixed mud. I've since been told, "don't do that, read the instructions on the mesh, etc." So, going forward I'm well aware of what mud to use with what tape. Anyways, one of the rooms has been painted, the other I'm still doing the mudding. I went with a smooth finish and I'm happy with the results, but am concerned about the longevity of my work, mainly joints cracking open. The house is 60 yrs old, one story and on a concrete slab, so settling should hopefully be minimal. Is there something I should do at this point in the project before I get to far along? In the pianted room, should I sand down the paint at the joints and remud with paper? In the unfinished room, should I sand down what I have on the walls already and re-tape and mud with paper? Or, just continue with what I have and keep an eye open for cracking in the future? Is there a corrective action I could take at this point or just live with what I've done?

Any suggestions will be appreciated.
Thanks!!

If you are happy with the way it looks I would leave it as is and see what happens. It might look great for a long time or it might start cracking out in 6 months. really cant say for sure so don't stress over it now.


Oh and one other thing...DONT DO THAT AGAINBeer 4U2