So decided to redecorate a bedroom ourselves.
We removed wallpaper, scrubbed, sanded, cleaned, primed (Zinsser B-I-N White Multi-surface Matt Primer), skimmed (Make Good Plasterboard Jointing, filling & finishing compound) and one coat of primer/undercoat (Dulux Universal White Multi-surface Primer & undercoat). My issue is I have a few areas where I can see 'steps' from where I've skimmed, my fault for not sanding well enough in these areas.
Can I use joint compound again and skim on top of the primer/undercoat OR should I be doing something else? Please help. Go easy on me, I'm a rookie :) learning as I go. Thanks.