As you can see in the pics, the wall to the right of the staircase should probably be replastered but at the moment obviously it's impossible to get a plasterer. I'd really like to get on with painting it as I'm running out of jobs to do in the house, what do people think about using Polycell finishing skim over the bad bits, glueing and filling the cracks and then painting over the top - or am I just trying to cut too many corners? There are small parts of the wall where you can feel that the plaster has come away from the brick, hollow sound when tapping a slight bulges - could I knock these bits away, fill and skim?