Nepali answers

Mero naam Kacie ho.
Ma 30 barsa bhaye (1).
Ma yaha(2) Australia ma baschhu.
Ma massage chikitsak (3) hu.

No corrections needed. 

1. Other was of saying it are; 

a. Mero umer 30 barsha bhayo. ( My age is 30 years) 

b. Ma 30 barsiye Aurstrali mahila h(n)u. ( I am a thiry year old Aurstralian lady).

2. yaha can be omitted as well.  

3. Are you a physio ? We don't have Nepali words for many technical words. You may want to say them in English. 

chikitsak is word for surgeon, if you don't know. 

4. chh in baschhu is छ and ch in chikitsak is च. They are two different letters. Though many Nepali write ch to mean both, I would suggest you to write chha and cha seperately. It will make your nepali better. If you want me to speak those letters for you, you can send me your number in private message, I will app you. 

Nice write-up. I will expect some difficult sentences next time. ;)