You need one of the skills in the tree to be at level 7 ( Metalworking from BS, Tailoring from LW or Woodworking from WW) not the trees. So at least 7 skill points invested in the Skill line. With 34 in Blacksmith you should be able to level Metalworking to 7.Have the same message for No. 13, but I'm blackmith 34, tailor 25 and woodworker 11... Can't read it