Sphere Progress

I am almost finished with the sphere. I am currently adding shadows, and working out small details. Adding the shadow was difficult at first because for some reason, Photoshop automatically changes the "Channels" to the "quick mask" every time I switch layers. This was an added difficulty, but I eventually figured out how to switch to RGB every time I needed to paint onto a new layer.

I realize I still have a lot of work cut out for me, however I am nearly positive I will finish this project soon.