You must post something, what posters will fancy. I suggest, you post pic of your back (skin, only!). You might add variations to that 'project': 'OOOOh LOOK, there is a coin on the floor.......', or 'niau niau' thingy. You must make sure, pic is taken from your back.

I would get weibo account to see that!

You could post your profile link here, I cannot imagine that it would not spawn at least 5 new fans

let me take some photos of you, 

I've often found that constantly liking and reblogging people's posts helps, the same as Tumblr.

It depends on what kind of followers you want to attract and on the type of content that you like to post.

If you only want to get more fans no matter what, chinese people love to see foreigners doing things related to their culture and adding a little bit of humor to it.. The guy speaking chinese with different accents, the other one making a soft parody of the communist songs, people dressing in traditional chinese clothes or make up... are good examples of how to become popular on weibo by doing things that most Chinese people can do, but they dont expect a foreigner doing.

You will see an increase in your chinese followers if you can surprise them showing that you can understand their culture and humor.