Tell her you love and appreciate her! Tell her this when you get up and/or when you get home and/or when you say goodnight to each other. (Women love to hear this from you every day.)
Leave a love note for her! (It's easy, I'll show you how).
Give her flowers or small personal gifts! Ask her what she likes. Or... (I can help here too).
Do fun stuff together!
It doesn't matter what as long as you both enjoy it. We've tried many things. I'll give you some ideas about what to do, but also show you how to; get her to go along with your new ideas.
There is more on this step in"The Real-He-Man 7 Minute Marriage Tune-up"
Also including is some serious follow-up, such as:
"Note: if she rejects these efforts, see steps #4, thru #7".
Each one of the 7 steps is fully explained and can be read in a minute or less!