Hi everyone been plastering two years now and im still not managing to put in on the wall flat , when i put first coat on theres are lines everywhere and hollows and this is the same with the second coat !! any tips for laying it on flatter ?? Its such a big problem cause when i come to trowelling up there are indetations and hollows everywhere and its making it much harder then it should be . My walls end up with streaky bits in them and light bits instead of a nice pink flat finish!! Any help please ??