i think you are still a lil scared , ry to be more aggressive . also you can try to to be has low has possible , bring your gravity center has low has possible . a tip for this bring your hands close to your knees or even on your knees . keeping in mind that you need to keep 50% of your weight on each foot .
now this is only for a flat rail or a down rail , dont try this on a kink ,rain bow or tick out rail .
try this and come back to me if it doesnt work...