If you run the edge of your blade at a 90 degrees to the wood you will make shavings/dust. If you make enough dust it will catch a spark. You ned to get real close and pull the ferro rod away from the striker instead of pushing the striker away forward which often snuffs out any spark as the striker hits the tinder.

What ferro rod do you have? The BSA Hotspark and the Light My Fire (Swedish) work no problem