Funny i was thinking this the other day.
My perfect shemale already exists thou -
almost, her name is Sasha.
Most of the attributes i like in shemales are the same as i like in women, except for one thing of course, the cock, and i like similar attributes as you.
1 Her own long dark black flowing locks. (Sasha)
2 Beautiful persing sexy eyes (Sasha)
3 Beautiful feminine face, with well defined bone structure, but faintly androgynous (Sasha)
4 A sexy smile (Sasha)
5 Small and petite, with a tiny waist and slender shapely body, well toned with a hint of a feminine six pack (Sasha)
6 Slim shapely legs (Sasha)
7 Pert, sticky out, pear shaped bottom (Sasha)
8 Small, firm, pointed banana shaped tits, with large pointed firm nipples.
9 A big fat rock hard curvy up cock (must be bigger, and especially fatter than mine, this really turns me on) prefably 7+ bent to one side. with a thick shiny purple bell shaped knob end, a thick rim to clamp my lips around, and a tight hairy ball sack, with a massive load of hot spunk waiting to blast into my arse and face, with a thick black bush surrounding it all .(delicious!).(Sasha)

10 Into suspenders, stockings, lacy knickers and pretty feminine cloths.(all the better to show that lovely fat cock off!)(Sasha)
12 A sexy walk and soft voice.
So lovely Sasha has most of thees attributes, the only things i would change on her would probably be her tits, thay are a bit fake round and large for her, but thay are still very sexy.
Also i would give her a touch more meat on her hips and bottom.
Apart from that she is totally perfect and adorable.
There are other shemale's i love with bits I'd like to interchange for fun, if i was to build the perfect shemale.
Danielle fox has a fantastic fat curvy cock, she also has beautiful round tits.
Bianca farrie is beautiful and pretty, and has a lovely long slender body.
Mint what a lovely long cock.
Nancy anther incredible thick fat cock.
Kaleena beautiful smoldering smile long dark hair.
I could go on all night.