2 things

Do some sit ups to build your stomach muscles and pick a girl with bigger tits.

Have you ever had sex?  I mean with a woman.

Honest answer? bend your knees.....

don't just lay there flat, bend your knees and put your feet flat on the bed with your legs spread a bit, and use your hips to lift the lady toward you. This changes the angle of penetration in a way that a lot of ladies really like, lets you become more active in the position, and moves her toward you so that you can suckle her nipples.... or spank her bottom a bit as well

Re: how to have cowgirl and sucking tits at the same time

Wow U R kid'in right ?  Where there's a will.....

Have two gals.

Well it helps if the lady is very busty.....

but the other guys gave you some excellent ideas about positioning for smaller chested women.

It depends how deep you are in & how big you are.  If she's taller it can help...  I'm getting horny again just thinking about it.
skb

didn't you do this b4 the hobby days?