Its nice. It has a nice mellow exploratory feel to it.
The top piece is a bit weird to me though, are we in a cave and if so it looks strange that it melds with a tree to the left. It took me forever to notice the ledge and the people standing on it. Maybe differentiate a bit more between that and the background somehow, having the edge vertical to the composition makes it read like just another tree on first glance.
Regards - NWS
Agreed with NWS on all points. Also, I don't know if you did this intentionally as stylization, but the very simple thin rim lighting on a lot of the elements makes them look like they are flat cutouts.