How to take as high contrast

I felt, need to know how to heighten contrast of picture. to make more artistic.
A man one of my contacts takes very nice photo that includes both of structure and sky are metered right. I want to take as him.

So I got some answers as follow for that:

1. Always lighting from my back
because backlighting reduces contrast.

2. Surely put lens hood
lighting from my next is reduces too.

3. Choosing right hue mode at every taking
Taking with same hue mode always I did, is wrong.

4. Choosing right white balance at every taking
I surprised, setting I need is changed considerably between 15 minutes.

5. Chance comes after 3 o'clock PM.
Noon time is good. but too strong light is sometime reduces contrast if I want to take both of structure and sky.

6. Set positively for under exposure
Set between EV-0.3 and -0.7 than anybody said right. Photo has been taken with over lighting looks cute. its good. but contrast is reduced. its problem of what I want to expressing thru the art.

7. Set positively F8-11 of aperture setting
I didn't know that contrast is heighten when use F8 or more over. its natural truth, because center of lens shows most good performances. however over F11 is not good, because photo is taken as be covered red filter by diffraction effect.

At last weekend, I forgot to try 7. point. So I should like to do it at tomorrow public holiday or next weekend.

Also, I must not forget most most important fact is, clean up every time.
Sorry my cam... X-o