We have bought a relatively new house and I am really chuffed that all the walls are nicely plastered and unpapered. Not being particularly blessed with decorating skills I,m llooking forward to watching the wife paint the walls whilst I offer advice from the couch. One snag. She has agreed to do the painting as long as I sort out all the various cracks in the ceiling. I can't plaster for the life of me. I've tried fine crack polyfilla This removes the cracks but then gives me an uneven surface. Is re skimming the only answer?