Texture painting vectors ?

What is the best way to texture paint a vector like this one


on to a material, i can get it to blend nicely giving it a sports
t shirt feel, i can do the front and back no problem, but on
the shoulders it distorts and the fall off is distorted.
Let`s say i wanted to do the shoulders ? with top view i would
then have to re paint the main texture to get rid of the fall off
spots from the front and rear view, then painstaking align up the
vector patter witch never looks right :frowning:

Also is there anyway to make it always sync up when i zoom
to get closer ?

Also if this is the wrong way to do this, and should i just do the vector
in photoshop ?? any help would be appreciated.
Thank you.

Would be great too hear from somebody with experience willing to share.