Wearing suitable clothing
Most people are not good at choosing the right clothing that best enhances their appearance. It's not a natural skill. We're not objective creatures who can see ourselves well.

Try this at home. Open your closet. Is there any outfit you purchased in haste at the store, and then returned home and never wore it in public? I bet that's so. We thought it looked fine, but then realized, “Ugh, I would be embarrassed to wear that because it doesn't fit. It doesn't enhance my body. The colors are wrong. I need to lose weight first.”

We're not subjective. Women will ask their best female friend (BFF) but oddly, BFFs are terrible about lying or worse being catty and picking on their friends. I've seen that over and over.

All dating people must read a book specifically about clothing style. I'll leave you to make that choice. I'm sure there's a best seller in your country and based upon norms in your society.

Certain skin tones look better in certain colors. This is often called “seasons”.
[link to www.style-makeover-hq.com]
Certain colors in cultural myths evoke feelings. Often these are universal like white being purity, red for life and blood. Black for power and death. This is why people wear certain colors to invoke feelings in the Other. You should carefully study this as much as you study scent and perfume/cologne. It has a major effect on the Other, and allows you to make a positive (or negative) impression.

Just like scent, the color that looks the best on you as perceived by the Other may NOT be the color or scent you would wear. Women you know this is true by lipstick color. Women consistently chose lipstick color that appeals to other women, not men. How strange is that?

A lot of women don't understand male sexuality. The hint of decolletage is alluring. You want to catch his eye. But showing too much induces lots and lots of male attention (not only from him but also the entire room of men) and therefore subtracts from the attention on your face. Don't blow your chances by evoking raw sexuality and therefore pushing the sexual button too soon. Let him chase you instead. If you do it this way, you can excite the Other by revealing a little more and ramping up desire, but then knowing the myth of Atalanta, you want to create pauses to ramp down. The oscillation of hot and cold creates desire and passion. Constant decolletage actually dampens desire.

More is less. Less is more. This is why an appetizer is so delicious. You want to whet his appetite (literally sharpening it).

Have you ever watched a premiere or watched a celebrity awards ceremony and thought, “Oh my gosh! What was she thinking? That looks so expensive and trashy at the same time! How is that possible? It looks awful on her!” And yet, we do that all the time to ourselves.

Take pictures of yourself from multiple angles. Then look at them in an hour and think, “OK, do I really look good or bad now? Is there a better outfit that has better color, fits better, is more flattering to my shape, etc?”

Don't wear clothing that doesn't fit your age. A lot of women wear styles which are very dated and so they look older than their years. Others wear outfits that make them look old because older women wear those styles. Other women look silly because they want to appear young and so they wear a style that's worn by young women. We laugh at them. Don't shoot yourself in the foot this way.

All people can find an elegant style. Almost always that style of elegance will enhance your beauty or handsomeness. If you're the most classy dressed person, you'll stand out. It's not overdressing, few people will think that. Maybe your competitors will think that, but the object of your attention will think, “Wow! He look sharp. She has a sense of style among all these other women. His clothing choices show a superior eye.”

Having this sense of style causes a resonance in the Other, they think, if He is so discriminiating in style choices, if He picks me, that means I'm highly valued as being more beautiful than the others. He's careful about his choices." Make sense now?

You should become an expert at this. It's the easiest way to boost your self-worth. When you wear something flattering, then you feel more confident.

Don't waste money though. Be prudent and believe in your natural appearance, but by working on improving your body shape, then you can then reward your discipline by slowly acquiring clothing with better taste.