That's cool the cross-hatch/or line brush is very handy when you wanna speed-paint. I tend to use the soft-brushes in my art. Seeing how effective you used the brushes I think I should too invest some time in experimenting
Looking at this I see you are well on your way of creating some stunning art pieces. Right now I'm trying to find quick methods to speed up my work flow and I just learned the key is brush customization.
I've seen some artist finish their paintings in less than 2 hours while my paintings take days to finish ^^
Im uploading a quick paint tonight that I did yesterday - it took me just a day to finish so its the quickest one yet