Middle White Layer的意思|示意

Back to a white background again. But with a little extra grey in the middle. Double-click on the layer and follow the picture below.

再次返回白色背景层，在中间稍微添加些额外的灰色。双击图层，并设置下图参数。

Leaves the outer ring is white, middle green, as if someone leaves a layer of white paint coated.

叶子外圈是白色的，中间是翠绿的，好像有人在叶子上涂了一层白色的颜料。

Create a New Layer and make a selection 1px height and fill it with a Radial Gradient, White to Transparent, starting out from the middle and deselect.

新建一层，画一个像素高度的选区，从层中间位置开始用白色到透明的颜色值拉一个径向渐变填充。

Right click in the middle of your canvas and goto "fill path", make sure you have the color white selected and that you've create a new layer.

单击右键填充路径，确保你填充的是白色。你会得到一个新图层。