1) 对他好
- not too much, otherwise he feels he's earned you. he will not make more efforts hehe

4)当别人面夸他，让他有面子
u can compliment him privately too, as long as he did something good.

5)挑对人
agree with other mm, this is the MOST important

6)迎合其兴趣爱好，一起打游戏，打球，让他觉得和你在一起有意思
only if you don't sacrifice too much

7)谈吐幽默，让其发笑
It's great to have good sense of humor. If don't have to try too hard, just be natural.

8)打扮的美美的 (我觉得打扮不是很重要吧？男生好像看不出区别来)
important in the beginning at least.

11)处理好自己学习工作，不让其操心
well, nobody likes insecure people