I believe you can only call your self a true plasterer if you can do it all ...float and skim,dot dab,board and skim, render etc.To be a true plasterer yes you need to serve a good long apprenticeship you may not need a lot of the stuff you get taught but its always there if you need it....how many younger ones can do gothic arch window reveals with bits of hardboard...I hav,nt and no way would i let my lad do this s**t for a living.description of a plasterer is thick in arm thick in head.oh and good looking.