If you haven't been saving along the way, this is definitely a good time. Be sure to save this image as a PSD so your layers stay adjustable.
This is the time to play. Change the blending modes on the layers, change opacity, just keep playing until you find something you really like. I am sure you are going to come across some amazing combos. Also, you don't need to limit yourself to just these layers, add more if you want.
I am going to add a 2nd part to this tutorial on using the quick mask to keep detail in parts of your image.
You can ask questions or discuss this tutorial on Digital Grin.