First look at the tutorial effect chart.
New document 450x338 Pixel, background white, double click background to normal layer, add layer style.
The effect is as follows.
To build a new layer, use the Ellipse tool to draw the 2 elliptical selections shown in the figure, the color is arbitrary, I am filled with green, later will be covered with grass.
Build a new layer, draw a positive circle selection, layer white, add layer style.Classification: