With 50 million singles scanning online profiles, you need to put your best face online. A few eye-catching personal photos can dramatically Increase your odds of finding love that lasts. Try these photo makeover tips.

1. Focus on you. Especially for your primary photo, you'll need a photo that's you and only you. Yahoo! Personals and other sites crop primary photos to make a full-frame view of a person's face. If you start with a close-up, the cropped primary photo will be clear and sharp. Smile and be happy -- show that you're fun to date.

2. Be casual and cool. You want to post a casual shot that shows how you look when you're ready to go on a date. Avoid the formal, corporate-type shots where you might look too serious. I coached a guy to remove his coat and tie photo and replace it with a photo he liked from a family birthday party. With this casual, fun photo, he received 35 emails the next day from women.

3. Wear your colors. Pick out colors that are good for your skin tone. You're naturally drawn to your colors, so you probably already know what makes you look good. Or hire a style consultant or a professional photographer who can coach you on what colors to pick.

4. Watch the lighting. Lighting can greatly impact the quality of a photo, so take your pictures in different settings so you have options. For the best results, try taking shots inside with a red-eye reduction flash, and then outside when the sun is setting.

5. Choose backgrounds carefully. The background in a photo can make a huge difference. Try different backgrounds and make sure nothing is sticking out of your head by accident.

6. Take lots of photos. Dating is a numbers game and so is getting a great photo, so take lots of film or digital shots. Go wild on these bright spring days so you come home with a few amazing shots. As a corporate photographer, I was trained to take 100 photos to get five good ones.

And how many photos should you include with your profile? Based on the experience of Yahoo! Personals members, if you use all five available to you, you'll get more replies to your profile.

Happy Hunting!