
You can post as often you can. If you can post often or even daily you should just do it. You can post some relevant videos about your life not just about your activty like the show you are going to, some nature, going out with the bicycle and so on.
There are some specific advices on internet or on Youtube, you can watch or read them if you want. For now I am just telling you to be natural. Be yourself. Only time will tell if you'll have success or not.