Writing a script for an interview university "international college" ;w;

Hello , I am doing a script for interview university but in international college
it's Burapha university international college , established in Chonburi,Thailand

Seems nothing wrong , right ? but I'm just a bit of scared because of i always be excite,nervous,tremble
when speaking english T___T ... seriously , forget all of words , phases , slang that i ever learn
I rarely speak english in daily life , from get up until sleep again . didn't speak english to anyone
why we have to speak another language, in when we can speak thai in communicate . ( not included
when studying english intensive class , have to speak english because they were foreigner ( although they
live in thai until can speak thai fluently and complain us in thai , freaking hurt T_T )

i would like to well-done in introducing myself , if there anything wrong , please advise .

This is good.  Your meaning was already clear and a lot of the changes I have suggested would not make any difference when this is spoken rather than written.

" Good morning everypanel , My name is --------- . I'm 17 years old Thai national and a student from ---- of, which
there is an only female Christian Catholic school christian catholic in the central region part .
I finished studying in Mandarin Chinese mandarin and art program. I have one elder sister, she is also studying learning in this international college .

I can speak 3 languages including ed with English , Mandarin Chinese mandarin and my Thai native-language. I am actually i'm
self-studying Ggerman by self-taught so i can introduce myself in German language .

If you have already checked out my portfolio you might see a lot of an artwork , that's one of my hobbies.
I like drawing and designing but just for a hobby , I i meant just doing in my free time .

Just in case for asking another thing
- The reason that Ii would like to speak another language is Ii would like to meet friends , can be able to understand and have a communicate with foreigners, can be able to exchange each other's experiences of lifeand point of view onf many things .

- What Ii would like to be in the future ?
I would like to give a knowledge and information about tThai cultures, people and places tofor foreigners.
Iin my mind right now there's I may like to be a Tthai-language teacher in Eeurope (if i don'tdidn't manage my family-business) or
be a guide , a fashion designer or a freelance illustrator illustrator freelace . "

Thank you indeed for visiting and giving an advising //