Thanks for your question and for posting images. Nothing substitutes for a thoughtful consultation, and I would encourage you to have a formal evaluation to assess your anatomy and discuss your goals. To my eye, the middle picture is well balanced between the upper and lower lip, and the lower picture shows more volume in the lower lip. It would be important to differentiate the look you are after. Like some other providers, I suspect it would take a full syringe to meet your goals, but there is no harm in injecting less and allowing the result to settle before making a judgment. Additional filler can always be added. The most important thing is finding a Board Certified practitioner with considerable experience who will be dedicated to helping you achieve your goals.