Here are my tips
for stretching. I use a 6" weighted stretcher (5 lbs weight)
that I got from backlashleather.com
and I got this 6" leather stretcher there too.
I lube up with "bag balm" that comes in a green tin at CVS, put the
stretcher on,
then cover my balls with a plastic sandwich bag, held there with rubber
bands.
That holds the bals in the skin and really softens and stretches it.
I'm really getting
a nice hang (8") and I'm shooting for 12" by next summer.
I'd rather length than girth. If anyone else has tips, let me know.
Afloat on waves
of pumping pleasure! 
Hangin' heavy
Plump package
... and tickle
those balls !
The mystery
Comin' in for
a landing 
What's in the
bucket? 
A melon!
Pull that skin
back 
Tie it off
Phatten the cock
Nice dome
Stretch the full
package 
2-stage worm
Flopping
Classic 2-stage
silhouette 
Feel that sandbag
Flopping fun
Stubby cigar
Probe that skin
Belly rub
Perfection
Re-do the cock
More 2-stage!
Big melon
Showin' off
Swingin' sac
Cradle it
Rub it
OK start strokin!
Jiggle that bag!
Work the head
Go for it!
Heavy precum
Yeah... sweet
cum 
Heavy cum
Creamy cum
Cum, cum and more
cum!