I was just wondering does putting down patterns count as items on the floor in the game.
No.
I was delayed a Perfect Town rating in my original town, Applewin, because the garbage I had were those colorful ores which I collected used as outlines on human and villager houses as well buildings. (They looked sharp. Silver and gold went to the businesses and community areas. Other colors were for surrounding the houses.) But after asking about this topic, here at
The Bell Tree Forums, I was told the "Animal Crossing: New Leaf" game registers those ores on the ground as
garbage. I picked them all up, which took time, and then I asked Isabelle about the villagers' satisfaction. That quickly triggered the Perfect Town. So, have nothing on the ground other than your path, yes, but also flowers, fruit and, on the beach, shells are accepted.