First want to say this is a great peice and the mood you captured is really nice. My only comments would be in the pot,where the perspective is off slightly and adding a bit of dirt would help ground the cactus at the bottom. The lighting is a bit inconsistent where the highlights seem to hit some on the left and some on the back side of the pads. Pulling out some of these highlights all on the left side where the light is coming from will help as well as rounding out some of the shadows to give more form as the pads wrap away from the light. Possibly lightening and softening the wall shadow might help keep focus on the cactus. Again, great job with lighting in general.
Wow, amazing paintover. I agree 100%, the vase, the dirt, it improves 1000% Thank you so much! I will add some revisions! Thank you
Glad to help and again, not a lot wrong here. Great job!

