First of all, as hopefully everyone knows by now, to sharpen images in Photoshop you use unsharpen, not sharpen (Filter::Sharpen::Unsharpen)

Second, and here’s one of the few reasons I can find to use Photoshop instead of Photoshop Elements, you’re supposed to get better results if you use something called “lab color mode” (Image::Mode::Lab Color). The idea is that normally digital photos are in RGB mode. As a last step of your editing you switch to lab color mode, select the lumonosity channel, unsharpen as appropriate, switch back to RGB, then save the image.