Not much wrong to me.
Human for scale would be good - i'd place them on the levee, so its distance and size are scaled.

I agree sky is "busy" - why not plain dark blue (no clouds). Why let it distract at all?

Maybe foreground sand could have more yellow? It is a concrete color now, tho not texture.

Left island just needs more variety, i think - maybe add some rock outcrops among the grass?

Nice work! Maybe the light could be from a lower point, for more/longer shadows and better reading of the forms?

Message edited on: 09/10/2005 17:19