help please?

I basically need help on how to do this: (I don't know who made this, a friend sent it to me asking for help but I didn't know how to do it myself, so if you know who made it, tell and I'll credit >_<)

but of course for icon size. I found this tutorial in the memories, but since there's no pictures [I'm highly visual learner when it comes to tutorials] I'm not entirely sure if it's what I'm looking for? Like how the ...animation is in the back of the lines (?)... >_< I tried on my own before but could only get this, but i just stuck on top of the picture, so any help on this would be appreciative Please and thank you :D