Good to see stuff rolling in. 
Now I don’t pretend to be a ‘teacher’ here because I learn from everyone who posts. So these comments are just my opinions, and as such, should be taken with a grain of salt.
SulaMoon, I like the last set of hands the best, maybe play with line variation?
Anand, great stuff, definitely looking forward to more! Wil you be making any 3D contributions? 
Windroll, that’s looking excellent! I’d say though not to be 100% true to the photos colors, since unfortunately the colors are a little washed out in many of the photos / reference images. You will have to tweak to taste. 
NR43, the 2nd one is sweet!
zhay13, very nice too, I would say the same thing about the colors - you don’t have to be 100% true to the photo, since it’s a bit washed out. Nice work!
teo-disturbed, nice work on the shading. I’d suggest maybe refining the linework a bit more? Looking forward to more!
Frejasphere, I like the colors, but I think the values seem a little disorganized? Would love to see you try a medium like Faber Castell Polychromos - they’re great because they’re light, easily editable / erasable and have a great line quality.
iuvo, very nice!
calan, another beautiful work! Thanks for the gif. 
Splinter, welcome. Would like to see more shading on the hand, though the outline is good.
Glenn, I’m not super crazy about this style - I’d love to see you get back to more representational works, some of your recent stuff seems more experimentation for experimentation’s sake only. I really like that you push yourself to do new things, I think that’s fantastic in fact, but I would love to see you rein it in a bit more and go back towards the fundamentals, which I think is lacking in your recent paintings. Just food for thought. 
FateBringer, nice to see you aboard. Maybe shade a bit more finely?
sirielle, nice!
Agostinuke, great stuff, that’s totally fine to make a post like that, it’s informative.