Plumcrush:  where did you get the directions to do this from then?  Did you get them off the internet or did it come with directions that you followed?

Amazing job!! It's gorgeous. I would leave the caulking white, it looks fine as is.

@patches-no directions. My dad had done some tiling before and had also taken a class at home depot. We just kinda addressed issues as they arose, but I knew between my father's and my own perfectionism it would come out well :) My dad would occasionally consult with my BIL as well, he has done a lot of tiling.

You are lucky to have had your dad help you!  I'm just so scared to even try.  LOL