I have no idea what to do for the 6th puzzle piece. I have the 7th but not the 6th. I think it has something to do with using a character that has numerous skills.....but maybe that's not even right lol. Someone please point me in the right direction on this one.

You are getting warmer LOL ok you are on the right track. To reveal spoiler highlight below::

Puzzle 6 is completed when you have sufficiently trained a villager to become master in three skills. That villager will become an Esteemed Elder, and a totem will be created to commemorate their new status in the village.

How do you do the highlight thingy

What do you mean? How do you make "invisible" text in a reply, or how do you highlight the text?

To highlight the text, drag your mouse over the empty space.