A man should and must impart his high status to a woman by using high status body language. If he doesn't, failure is likely. Most communication between humans is non-verbal. Humans have always communicated non-verbally; language is relatively new in the grand scheme of things. Women can usually pick up on a man who has low status body language.
Body language is just as important as eye contact. A woman is wired to pick up on and interpret a man's body language. This is how she determines if your words are congruent with your body. If it's not, she will instinctively know something is out of place. Women are better at spotting liars than men. This "woman's intuition" is an evolutionary trait that women have developed from raising their young. A mother can always tell when her child is lying.
Posture
An alpha male has good posture. An alpha male doesn't slouch.
Think about the people you have responded to favorably in your life. How was their posture? I bet they didn't slouch. Mother always told you not to slouch. She knew what was best for you! When you have good posture, you appear bigger and more important. If you have bad posture, practice good posture until it is second nature. Also, try sticking your crotch out slightly.
Feet
Have both feet planted firmly on the ground when you a standing still and talking. Point your feet at a 45 degree angle away from the woman. Facing straight on is obnoxious; facing away from her is impolite.
Do not stand on the balls, heels, or sides of your feet. Have both feet planted firmly on the ground and shoulder length apart. If your feet are close together, this suggests submission (The woman's role)
Hands
Alpha males don't use their hands a lot when talking to a woman-they rely more on their voice for effective communication. Also, an alpha male has their hands rested comfortably to their side. Moving your hands around a lot tends to distract the listener. It makes you appear less sincere. You can try resting your thumbs just inside your pockets, or resting you're arms casually to your side.
Arms
Keep your arms rested comfortably to your side. Don't cross your arms over your chest, this makes you appear judgmental. Don't bury your hands in your pockets either. If you must put part of your hand in your pocket, just include your thumbs.
Twitching
If you have any weird nervous ticks, stop! If you can't stop, get some medication!