This art is beautiful. I am new to GIMP and also new to art/graphics world. I am working on one of my next IOS game app which requires 14 under water images exactly how you done here.
I tired to follow all your steps in GIMP2.8 but as this is in PS and I dont know much about similar tools in GIMP, I could not proceed further.
If you have same steps for GIMP, then please please share with me. I desperately need these graphics.
I wanted to draw the images of my own as i can not afford a professional desginer. I am an independent IOS dev and starting making apps.
Thanks a lot