Look like a friendly and attractive

Look like a friendly and attractive person. This does not mean you have to have to dress in the same way as everyone else does. You just need to look open, honest, natural, friendly, outgoing and clean. This is important because most people make a judgment about someone that they meet for the first time within the first thirty seconds of meeting them.
Be clean and have good hygiene. Having shampooed hair, kept nails, clean teeth, and fresh-smelling pits really makes you more appealing to the people around you. Guys, if you choose to wear facial hair, that doesn't mean you don't have to groom it.
Wear nice clothes. You don't need the wardrobe of a model to be well put-together. Stick with classic, dependable clothes rather than trendy and flashy ones. It's easy to look good in clothes that never become obsolete, so invest in them.

If money is an issue, then invest in one nice article of clothing every time you can afford. Chances are you'll keep it for a long time and you can slowly build a closet's worth of great clothes around it.