Top left · green front
Step 1 / 3
R: Two layers around the right corner: turns clockwise (looking at the right corner)
The yellow-green edge is at the top left, with green facing you.
Green is already on the front, on the left: do R U' R' right away.
Step 1 of 3: R. Two layers around the right corner: turns clockwise (looking at the right corner)