I am skimming the small bed room at the moment two wall i have done that is ok but i am now going to skim the ceiling now as i have never skimed a ceiling befor can i do it in two halfs as i mite not be quick enough to skim it in one go. Also will i see the joins when it dry's out or if some one has more tip's on skimming ceilings. My dad did say just make the mix a bit weter so it gives me more time befor it gos off.