hello although this is not my favorite medium of art (cutting pictures and putting them to gather digitally), I have seen a lot of it and have used it some myself.
what isn't good: nothing..... although, what isn't perfect is the shading and lighting. the shadow of the girl and boy should, Judging by the light from the Harrison, actually be coming down the rhino's middle, instead of just being on top of the rhino's back. also, although it still looks good, the rhinos horn seems to have lost some detail because there were too many separate lighting and shading done to it. so it looks slightly unreal.
what is good: about everything, from the vary good concept, and composition, and item selections, lighting and custom shading (vary hard to do btw) to the attention to the smallest detail (birds in the distance) to the biggest (clouds). it all feels seamless and almost perfect, but at the same time strangely wrong in some ways much like a dream.
all in all, this is I think the best I have EVER seen In memory of this type of art. well done
The concept to unite the threatening and loving is very good. I can see that in the shape of the rhino with the children, in the sunshine and the threatening sky in the background and also in the green grass in contrast with the desert. You chose to make a pale collor palette. That makes it very surealistisch and immediately recognizable as a work that requires more attention of the Viewer. What I also see is that the shadow of the rhino does not focus like the shade of the tree. The composition is well done. I love this work!