Volift
You should start out with maybe 1cc of filler and go from there. You do not want to overdo too much filler in the lips. It also depends on the look you are going for too. You can always add more filler to the lips if needed. Just remember if you are going to do your lips and you do not want to bruise you should not take any aspirins or anything that will thin the blood since brusing can occur.
From your phot your lips are attractive and do not need any filler but if you are considering filler find cosmetic dermstologsits or plastic surgeon and discuss your options.
