The first one is quite lovely: great crop, nice coloring, could maybe use a touch more contrast, but overall great. The second one has good contrast, but the coloring is a little off, with their hair being so green and the dark parts of their faces being such bright orange. The third one is fine - there's nothing really wrong with it, besides maybe needing a touch more contrast, but it doesn't really jump out at you. The fourth one is also very nice: great coloring, maybe needs a little something in the negative space, just a little more texture or something, but that's very minor. The fifth one: while, I don't love the coloring of this one, there's nothing really wrong with it, it's another one that just doesn't really jump out at you. The sixth one: again, the shadows on his face are a little too bright red/orange, and the highlights on his face and arm are blown out, also, I think this crop may be slightly awkward with his arm being cut off like that.