You would get a nice improvement in the tubercles and overall shape of the lips, along with the philtrum (above the lip) with lip fillers. Volbella, Restylane, and Juvederm are good to create a symmetrical lip. NovaThreads can be used to improve lift and shape. I would highly recommend getting a formal evaluation with and treatment from a board-certified cosmetic dermatologist and expert in facial sculpting. Technique is the key to a successful lip augmentation with fillers, so you'll want to see someone meticulous. An experienced physician will be able to determine which filler, how much filler, and which technique will give you the subtle result you're looking for. I see not issue getting the eyebrows done the day after. See an expert for your filler. Best, Dr. Emer.