I'm 18, natural, and quite busty... but should I make them bigger?

What would you class as a perfect size. Bigger or smaller then

if i make a surgery.. smaller or bigger?

if i make a surgery.. smaller or bigger?

if i make a surgery.. smaller or bigger?

if i make a surgery.. smaller or bigger?

if i make a surgery.. smaller or bigger

if i make a surgery.. smaller or bigger?

if i make a surgery.. smaller or bigger?

if i make a surgery.. smaller or bigger?

if i make a surgery.. smaller or bigger?

if i make a surgery.. smaller or bigger