I want to translate the following sentence into english "Dibujando una sonrisa en mi cara por que esta es batalla que no has ganado ni ganarás"
I made this "Drawing a smile upon my face cuz this is a balttle you haven't won and you'll never do"
If you have anu suggestions, please, write them down. This is a sentence that a friend of mine wants to tatto on his skin!
You're translation is pretty good, however the ending could use some work. Different ways you can say this:
Drawing a smile on my face because this is a battle/fight you haven't won and never will.
Drawing a smile on my face because this is a battle/fight you haven't won nor ever will.
Drawing a smile on my face because this is a battle/fight you haven't won or ever will.
Espero que tu amigo le gusta uno de estos.