I meant to ask Paul, how many strokes of the razor are you making when shaving a particular area? Is it in the same way you might with a Mach 3?
As previously mentioned, you really need to map out your beard direction and make a single pass with the grain (WTG). Further passes can then be made, one across the grain (XTG). I would stick to these two directions before you move against the grain (ATG), certainly on your neck. Never be tempted to take another pass over the same area without lather. Never ever try to shave an area that has no lather, just because it may be easier to see it.
There are a great many videos on YouTube, from the likes of GeoFatBoy and Mantic59. There's a bit more research with this style of shaving but it pays you back in ways you'd never imagine. Watch as much as you can and ask as many questions as you want. Never accept that what you are doing is the best way, there will always be another method, product, etc, around the corner that may suit you better.