Just moved into a house and started on the decorating. I've steamed
off two layers of painted wall paper in one room, under which is
painted plaster. In some areas I've taken the base paint off as well
as the paper so just plaster showing, in others the paint is left
there.

Don't think I need to go to the trouble of sanding off all of the
paint? But concerned the slight 'edge' between the patches where these
is no paint will show through?

There are a couple of scraper 'scars' which I intended to fill with
traditional filler.

What prep do I need to do now - will a good base layer suffice, prior
to putting on my chosen colour? Or do I need to use the skim finish
filler products to smooth it over


Any tips and suggestions please.

Many thanks