I thought I'd make a start on removing the boarder from DDs room. It started coming away nicely, then took VAST areas of paint with it 
House is only 10 years old and we painted wall in question about 5 years ago. So plaster all in good nick.
WTF do I do now? DH will flip as it looks awful 
We are re painting in there any way but dont know how to prep walls from here.
Sorry, I'm really rubbish at this stuff. Need advice before DH gets home (so I can act all cool and have a plan)