One thing I can think of is - depending on the size of actual size - the thin lines of the cloverleaf might make it hard to see. Also the letters appear to be a light green, maybe using white would provide a better contrast, and the braid also is hard to see since it appears to be a dark green. The braid might be a little too "fancy" in real life, as well.
You should be able to find a useful cloverleaf image on the net somewhere. Try a search for "4H" and remove the "H"'s??
But overall, I like it.