Excellent imagery, I love the details. May I ask how you did the sparkling floaty things in the first image? Is that in zbrush or photoshop?
shukrallah- the speckles are just from photoshop, I painted those on after I rendered it out. There might be a way to do it in zbrush, but I didnt try to figure that out 
wigo3d- thanks!!
Etcher- thanks!!