Layer masks to blend 3 images into one

Hope some of you can help.

Here's the project: I want to make three versions from the same image and put them in layers in PS.

I start with an image that I run through an abstract 'look' in Topaz Studio 2, 3 times:

100% - The 'look' is really cool, but it's very flowy and abstract yielding predominantly only broad strokes of color and shape. 

75% - The image is less abstract and more details and delineated shapes appear. Bodies of people in the scene can be identified as a standing figures but details are still weak.

58% - The image is still abstract, but much more details are evident. You can see faces, lettering and finer details. 

But I want to allow more detail to show through various parts of the composition.

I only know, or think I know, that I will need to put each image on a separate layer in photoshop and use a mask and brush.

But how? I want to be seeing the 100% image, but how would I be able to mask and brush parts of the 75% and 58% images so that individual brushings can show through the 100% image?

Thanks, Bob