Kalamos: yes, those are indeed my pics. Now I see what you were referring to by the hand-art. The pencil drawings were some early efforts. Now I prefer working in full color.
jf0x: as you can see from the drawings, I find the female midsection and navel of great interest and enjoy placing them in ticklish predicaments. I have two rough drawing ideas on the back-burner that would fit what you describe (taut belly, navel prominent) but I need to complete one nearly-finished piece before moving on to these. Keep an eye out though.
I would certainly encourage your drawing aspirations and see no reason to repress them. You have a very appreciative audience right here in this forum, hungry for interesting new images, so why worry about what others might think? Everyone has their own personal "kinks" anyway, even the ones who spend the most time looking down their noses and scolding the rest of us for "being weird". No need to sweat that stuff...