Thank you for your question and series of photographs. Based on your pictures alone I do think that a dermal filler, such as Juvederm can help achieve a better balance between your upper and lower lips. Be sure to see a board certified plastic surgeon in consultation.

You have very nice lips, which if you want them bigger, will improve your chances of an excellent outcome. Don't let a surgeon tell you what you like. If you want your lips larger then find a surgeon that knows how to give patients what they want.

I appreciate your concern, you have a very pretty face, so I would recommend conservative lip augmentation with Hyaluronic Acid, like Juvederm plus. Another option is fat transfer which is more permanent. Seek out a board certified plastic surgeon in your area, Good Luck!

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.