Hi Kian, nice to meet you! Here are the corrections to your post.

My Intention

Hi I'm Kian, I'm from the Philippines. Currently I'm on a Job hunt (looking for a job), I'm turning 18 this May. I really do want to improve my vocabulary so I entered signed up to this website hoping that someone could help me here. I'm friendly and nice, always cheerful and enthusiastic at in many ways. For now only this stuffs I can tell to myself (not sure what you mean by this please exlain further) have a great day everyone.

on a job hunt is perfectly good English, but people are more likely to say "looking for a job" or "looking for work".