Sadly this reminds me too much of small decorative cake tins. Ah well, on to the next idea.
My own version of a drawing my father created in the late 60’s I think. He used two weights of black line, I used two weights and two colours.
I’ve just finished drawing this out, first in pencil then in pigment liner. Thinking now about adding hatching to accentuate the 3rd Dimension.