you must have seen many movies. you must have seen many movies with special effects. What are these effects for and why are they called special? The special effects are used to create an atmosphere that may look great. you have to do The same to look romantic. Create special effects around you so that The overall effect is smashing.
for charisma, watch some video shots of charismatic people. Observe carefully. Watch The way these people speak, make hand movements, and change eye and facial expressions. This study will be of help to you in changing yourself totally. Practice in front of The mirror.
it is not easy to look romantic, but given proper changes, you can change to one of The most romantic persons walking on The earth. Do you not believe me? Try what I said about special effects and watch The results.