PS鼠绘盾牌图标

You should have something like this.
你会得到这样的图像效果：

Select the pen tool, change from "shape layers" to "paths", create a path like this.
选择钢笔工具，创建一个像这样的路径：

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. Select the new layer (so the layer turns blue) then holding the CTRL key on the keyboard click your sheild layer. You should have loaded a selection, now goto "select > inverse" then press the delete key on the keyboard. Set the new layers opacity to about 23%, label your layer as "sheild shine".
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。按住CTRL点击盾牌形状图层获得选区。然后反选，选择白色层删除多余的白色。然后把白色图层的透明度调整为23%。图层属性"滤色".如图：