I have a plasma cutter and an 80 gallon tank to make a fire pit. I need help on the design Thanks,Steve

I've googled fire pit and seen some really fantastic designs from John T Unger. I'd love to have something anywhere near as cool as some of his stuff... I have a plasma cutter and a mig welder, however this is my first project with the plasma cutter... so I don't want to try to get too fancy and blow it. The tank is large enough that cut in half I have 2 chances to make something nice. I've googled pumpkin stencils, buddha stencils, flames and flame stencils and dragon stencils. I like arabic art and design along with the list above. Please help with ideas. Thank you!!! Steve