I have to say that as a hiring manager what’s written in a thank you note hasn’t swayed my decision on who to hire. I’m only interested in a candidate for how they fit the culture, job requirements, etc. and a well written, thoughful note from someone who doesn’t will not change my mind.
My caution is that some candidates who have submitted poorly written notes end up hurting themselves. Be careful not to rush it. Keep it simple, on point, and brief, while clearly stating your interest.
If you don’t have alot of experience state your work ethic and how much you want an opportunity to work hard, prove yourself capable, and become a valued member of the team. Good luck