Step 1. From your Adjustment Layer Menu (black and white circle at the bottom of the right hand side toolbar) select Curves. Brighten your image by pulling the curve line up to the left.
Step 2. Next select a color you want to use for your 1st gradient. We did a mint green. Select Gradient from your Adjustment Layer Menu. Play around with the scale and angle of your gradient. Lower the opacity.
Step 4. Select another color and repeat Step 2.
Step 5. From the Adjustment Layer Menu select Brightness/Contrast. Adjust brightness.
Step 6. Select the Color Burn Tool from the toolbar on your left hand side. Set the range to Shadow and Exposure to 50. Click over to your original background layer and mouse your curser over parts of the images you want to darken. This will bring out some of the details lost in the editing process.
Enjoy Your New Image!