If you overlays are in JPG format, all you have do to use them is to change overlay’s layer blending mode. Check what suit’s your needs best. You can try different modes. Here are few examples.

Example 1

  1. Load you image, add overlay layer,

1.1 1024x612 - Light and shadows JPG overlay

2. Change it’s blending mode to screen

1.2 1024x609 - Light and shadows JPG overlay

3. Lower opacity, add layer’s mask and remove all unneeded parts with the help of soft brush.

1.3 1024x555 - Light and shadows JPG overlay

Example 2

2.1 1024x633 - Light and shadows JPG overlay

Here we’ll use normal mode, remove some opacity and use mask.

2.2 1024x555 - Light and shadows JPG overlay

Example 3

For layer rotation right click and it and choose horizontal flip.

3.1 1 1024x555 - Light and shadows JPG overlay

Change blending mode to overlay.

3.2 1 1024x606 - Light and shadows JPG overlay