Amazing tags 25
, I really like your color choice in the 1st one, and nice depth in the 3rd. The sky in the 1st picture need some more smudge between the rock and cloud, and maybe a little white above the hill in the background.
hmm i cant see how big the opening is on the second picture, but it still looks like that all the plants have the same color even thought some of them get hit by the light. Try to play around with shadows and light, and dark and bright colors a little more. Remember that the hole is the only source of light in a cave, and it just seem a little to bright to me, but then again i cant how big the opening is.
beyond that i simple love them, keep on the good work!.