Based on a photograph taken in Nice in 2014. I made a quick ink sketch and then applied watercolour washes without trying to keep within the boundaries of the line.
Greens added after reds.
The greens were painted before the rose/violet.
Cling film applied to acrylic paint which was very dilute. It was allowed to dry and the film was peeled off.
Pencil drawing with watercolour lightly applied.
Simple print of can made by transferring image
from a plastic sheet and finishing with watercolour washes. Rough watercolour paper.