Hi Peter - Welcome to TSR.
You've got the light touch potentially nailed, but like Rob, I wonder if you've found the perfect angle yet.
Place the top of your razor on your cheek with the handle sticking straight out sideways. Now, lower the handle until the blade just bites. That's pretty much it - the angle.
Gently go north/south all over your face. Now, east/west. Leave it - do this for several times and then start to think about a south/north, at against the grain.
Also, potentially look at your post-shave routine ...
Once you've finished, give yourself a warm rinse to clear all the soap off, then immerse in cold water several times and gently massage your face. Consider an alum block - not everyone gets on with these, but I do and you might. It gives a nice tingle and lets you know exactly where on your face you've been a bit rough. Do get some witch hazel in and splash this over after your cold rinse. This will tone your skin and close up all the pores.
Most important, don't apply an EDT fragrance to your face. You might already know this, but aftershaves are not the same as fragrances. Colognes and EDTs are different. Aftershaves are very specific products - you can use one of these after the witch hazel has soothed.
In the main, cold water after you've washed the soap off and go with soothing and cooling post-shave splashes. Witch hazel can be bought from your local supermarket in the pills and potions section or a couple of quid - you'll get a 200ml bottle. Check out the aftershaves - you'll be pleasantly surprised at Brut and Old Spice.
Good luck ...