Dodge and Burn:  by lightening and darkening the shadows and the highlights you change the form and the appearance of the subject

Check Layers:  they help you see all imperfections of the skin better

Frequency Separation: this is technique which separate the texture of the skin on one layer and the color on another. This allows you to improve the skin without losing quality

Halo Effect: this action will create strong vignette, will bring contrast and depth to your images. Mainly I use it for portraits on which I put textured background.

Toning: my pack comes bundled with 6 toning presets 3 warm and 3 cold. As bonus you get a PSD file where with one click you can see how your image will look with the toings.