Ceiling Plastering

I'm hoping the solution to my problem is simple but as a total DIY novice some guidance would be useful.

The ceilings in my house were previously skimmed over light artex, however they've skimmed around any light fittings rather than removing them. This means when I go to change them there are two layers, the skim and lower remaining artex surrounding the hole for the wires.

This is a problem in the hall where there are large circular flush lights which I wish to replace with pendants which don't come close to covering the remaining artex.

I want to skim over this artex but don't know which product to use or whether the area needs prepped in any way first?

All help appreciated!

Before you get involved with a load troublesome work, have you considered fitting plaster ceiling roses over the holes where the light fittings were?

sparkwright said:

Before you get involved with a load troublesome work, have you considered fitting plaster ceiling roses over the holes where the light fittings were?

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An interesting suggestion but I just don't think it's in line with our "look". We have chosen some contemporary warehouse feel pendant lights which wouldn't work at all with a ceiling rose.