Horrible job scraping off artex high spots, had four rooms here with artex finish, it was loose, so completely removed the lot, & I screwed all the ceilings as two were sagging in places, save problems later, then I skimmed four ceilings.
![Frown :( :(](/styles/default/xenforo/vbSmilies/Normal/frown.gif)
Still have artex to remove from the kitchen ceiling, I'm getting too old for all that work now.
You will need to bond the old artex first before plastering over it.
PVA mixed one part PVA to four parts water, brush on & let it dry first, then skim.
But, I tend to board other nowadays & use Screws to fix then applied a skim coat.