I've spoken English my whole life! Feel free to text me :3 

Any would work, it depends on how long ago you're talking about, and also if the thing is still happening. Past present and future tense, look it up its a thing 

It really depends on the person. If you're very close with them in a friendly way, then it would probably be fine. But it is slang, so there are no direct rules.

That is a common phrase, it is usually seen as positive, since it usually means the person has a good reputation.

I think it means to discribe someone who is always petty, so they are living the petty life. Though this is not a common phrase

Hello, my name is Dasha. I'm going to move to the US. The first thing that I will do when I come there is find work. My skills are enough for a good job, because I like to meet new people. But I don't know the English language well. So I found out about a job to work as a housekeeper, which doesn't require special skills and will allow me to learn English. The work implies cleaning rooms by the vacuuming, washing  the bathroom, and a lot of other things. It is hard work because you have to work with chemicals, and carry big weights. It scares me because from such work may arise health problems. Do you know any other jobs for people learning English?

I have been speaking English my whole life. I'm always available d(*⌒▽⌒*)b