Presentation in English

Hi everybody!

My name is Nelly, I am French and (I am) currently live (living) in the UK.

I hope to meet people (with) who (I) could help me improve (and maintain) my English and Spanish and, obviously, (I) would be happy to help you with (like to share) my language. (with you and help you to improve it! :) 

In England, I work as (am) a French Language Assistant (, I am working) in a boarding school. My job involves correcting the girls' (and I have to speak with the girls and correct their mistakes in) French, (and explain to them their mistakes) so, I could do the same for you!  (with you! ;)

I look (looking) forward to hearing from you,

Nelly

Your grammar is technically correct but we would almost certainly simplify your sentences as they are a little long winded. Your penultimate paragraph is made up of one sentence and I would suggest splitting the sentence in two so that it reads smoother. 

Presentation in English

Hi everybody!

My name is Nelly, I am French and I am currently living in the UK.

I hope to meet people with whom I can improve and maintain my English and Spanish and, obviously, I would like to share my language with you and help you to improve it! :)

In England, I am a French Language Assistant; I am working in a boarding school and I have to speak with the girls and correct their mistakes in French and explain to them their mistakes so I could do the same with you! ;)

I looking forward to hearing from you,

Nelly

Great job!

Presentation in English

Hi everybody!

My name is Nelly, I am French and I am currently living in the UK.

I hope to meet people with whom I could improve and maintain my English and Spanish, and, obviously, I would like to share my language with you and help you to improve it! :)

In England, I am a French Language Assistant,. I am working in a boarding school and I have to speak with the girls and correct their mistakes in French and explain it to them their mistakes ("their mistakes" sounds a bit redundant) so I could do the same with you! ;)

I am looking forward to hearing from you,

Nelly