How to give compliments without sounding too fake?

we can tell if your faking it so don't even try it..if those compliments don't just fall out of your mouth like some sweet gentleman, then that is not your forte in giving compliments, and yours might be more in the way you treat her like a lady, such as opening doors for her (and holding them open for other woman, watching you treat her good, and other people, and being with you is a compliment in itself for her to have the honor of being with a man like you, makes her feel pretty special.