maybe it is only me, but erm... don't you wanna change the heads of the snakeys?- it should be improved quality or just more pixeling..dunno.
And this is a bit Rhei military lookalike...possibly some shading? PLUS. add some patters to the wings. You have enough space ti fill it with Celtic pattern. The knots.
I know you mt, you have your own patterns somewhere search for them and add to it. Let us see the real thingie. Just cut off from the black if ya know what I mean. And possibly add a border.
but its your logo. I just suggest: put your blood on it and it will be what you will like...even more.
Otherwise cheers *raises your green drink*
no ice-cubes no water. Pure double.
Wery decent job.