perspective challenge

I had an interval of huge patience and attempted the angles of this library view.

Smudgy pencil and much erasing, some ruled lines and freehand ones. I quit before attempting the ceiling tiles and floor tile lines.

The sides of the stairways are glass, topped by the stainless steel tubing. I left out the additional handrails that attach to the glass. The net-look area in the distant right is the security screen pulled down over the cafe counters.

Pencil doesn't scan well, but my patience surge was over long before I could contemplate inking these lines. On Canson drawing paper.