Well there is no doubt you have good control of your brush when I look at those fly away hairs
The pointed blade is a little too aggressive for paper, that doesn't mean you shouldn't use it though, it is especially handy for doing thin fly away hairs which have been caught by the sun or other light source and very very fine facial hairs or hairs on arms sometimes referred to as "down" but you have to be very light with, I usually do that with the blade of it's handle held between my fingers, a rounded blade is less aggressive and will give you a lot more control.
Throwing on a coat of varnish will give your paper similar properties to clay board, you may find that when you varnish your paper it will warp some but you can iron it flat again when it's dry, that's assuming it's paper and not board, boards would be fine but if you want the rigidity of board you can stick your paper to cheap cardboard by means of spray adhesive or even thinned down wood glue (PVA), I've resorted to doing this for my Paint Pals cos I;m a cheap skate but I believe my little cuddly leprechaun friend
@matty171 does this too