Asura Dragon look?
You mean something like the ones below ?
I guess you have to find the right armor to match the helm. Preview in PVP locker helps alot with this.
To me , Asuras will always look silly and goofy no matter what cool armor they wear. It is part of their feature. Just look at Braham’s Heavy Helm on an Asura.
If you really find your Asura’s head to be that gigantic , maybe you can use the makeover kit to minimize his head size. =P