I really like the concept, but it looks a little soft on the frog (though it is difficult to really tell due to the camouflage). Perhaps a closer shot on the frog would be more effective (and allow you to show more of the detail in the frog).
5 - Good potential. Like the greens. Not sure what to suggest, perhaps it is a tripod (apologies in advance if you used one), the focus, or the lens (again apologies in advance if you used a macro lens), but if this were sharper, more clarity/pop and perhaps a variation in composition make this even better in my opinion.
Great shot. The moss looks a bit over saturated, but I think the only draw back to the shot is the frog does not contrast enough with the moss. I like it.