Put the shop on the homepage.
The first screen should offer something to buy.
Right now the homepage is a gallery. It shows the work beautifully, then leaves the visitor to find the shop on their own.
A products section fixes that: a few featured prints with prices, and the originals that are available today. Someone who arrives from a video can go from seeing a painting to owning one in a couple of clicks.
SARAH KRANING ART
Collect a print
Shop all prints
Names and prices are from your shop today. The color blocks stand in for your paintings.