Ninja Turtles Man Hole - Substance Designer

I desperately wanted to make another Substance Material. And after watching the TMNT: Mutant Mayhem and finding really nostalgic with the Ninja Turtles. I had to make this Man Hole. I might make a complete scene soon with this material since I really love the idea.

Still need to learn a lot in Substance Designer. But I'm happy with the result of this test.