I have the same problem, except that my face is round
! If I get nice clumps - or even ropey curls - you can see my scalp. I have a couple of tricks that seem to work for me besides finding a good gel that gives me volume.
First, I've been air drying until my hair is about halfway dry. Then I diffuse it standing up, then bending over, then standing up again. Gives me nice curls, waves, lots of volume.
The second little trick I've found is after I'm dry, I bend over and gather my hair at the crown and clip it with one of those huge jaw clips. I kind of pull on it once it's clipped very gently just to let the teeth pull my hair away from my scalp. I leave it in for just a few minutes - then take it down and fluff my hair from underneath. I still get nice clumpy curls with some nice spirals here and there.
As for gels, my favorites here lately is HE Body Envy, L'Oreal's Out of Bed (have to diffuse from wet to 95% with this) and the product I've been using all week and am just about ready to declare my HG product - Graham Webb Making Waves. I've had some great clumps, nice volume, soft hair and it's working for me day after day
Anyway, hope some of those suggestions might help