Hi,
I have the same helmet and a drift ghost HD 1080 , I looked at a few you tube videos , purchased the curved mount , placed that on the right hand side of the helmet, just about in line with visor hinge, I ensured the mount self adhesive pad was in full contact with the helmet, marked it, give it a good clean , put it back on marked it again, took a deep breath removed the tape on the mount pad and placed it on.
I then adjusted the mount on the drift , I clicked it up 2 positions so the camera was pointing upwards, then started to adjusted the lens .
So far I am happy with the recordings I am getting, you do see a small amount of the chin of the helmet and a fair amount of the windshield , you also get the clocks and a good bit of the road ahead.
I also purchased some flat mounts and put 1 on the top of the spot light housing, this is a clear view of the road ahead, I am yet to put a mount for a rear view yet, will get round to it this weekend.
Kevin