1. Grooming:
This is finding the right hairstyle, hair color that fits you nicely, projects your facial features, and amplifies your beauty; it is not compulsory to go with trends, but absolutely necessary to know what works for your unique features.
2. Hygiene:
Brushing twice a day, shaving private regions, waxing, and bathing regularly should not be taken for granted
3. Skincare:
Drinking water frequently, and using dermatologically approved body lotions, and creams can be effective in making you more attractive as the skin is the largest organ in the human body, and is the first part to get noticed about a lady.
4. Exercise:
Apart from the fact that exercise gets one into shape and better stamina, it eliminates the idea that you're lazy.
5. Dressing appropriately:
Dressing according to your body type in a way to project assets and to deflect attention from other not so attractive parts plays a key role too; a form fitting dress is a better way to arrest and keep a man's attention than a showy or revealing outfit.
Sources: wikihow, science of sexy.