I guess this goes under Help

My new (5 week old) drum came tuned with 2 empty pairs on the first row. I just put in 2 new diamonds, thus finishing off the first row around the drum. I think I'm stopping here as it definitely sounds different (I'm still not entirely sure what a properly tuned drum is supposed to sound like, but it does sound better, I guess), but if I get to the point of needing to add more diamonds, what pairs am I using? On the 2 diamonds I just put in it was obvious, but now I'm looking at a complete first row of diamonds with crossed verticals, so what pair of ropes am I looking for to start the second row?
I've seen video tutorials, but they all show only the first row. I'm curious what a second row is going to look like.
Does this make any sense? I should take a picture so I can visually explain what I'm looking at and trying to figure out.