It's hard to tell for sure with all the pictures being taken from the same angle, but it looks like it's set up correctly. You could maybe even slide the straps a bit further toward your toes, but the way you have it now is fine too, personal preferance. Also, how wide is your stance (from middle of binding to middle of binding)? It looks pretty narrow.
I mounted the bindings at 21 inches which is where the boards "center" is. I didn't mess with moving my stance in terms of forward or backwards since I don't' see too much powder. I took the pics from that angle because I'm just worried about the left/right positioning of the straps. If I took any other angle you wouldn't be able to tell at all if they are centered correctly no?