Please correct my nepali sentences

I am drinking water. 

ma pani pinchu. (piuchhu is simple present) Piudaichhu.

Water is good for health.

Pani ramro for the health. Paani swaasthako laagi raamro hunchha. 
It seems like it will rain .

pani porcha? parcha hola.
How are you?

tapaile tapailai kasto cha? timilai kasto cha?
Lets eat

Cholo khane >> khaau 
Lets walk

Cholo hate >> Hidaau. 

Good attempt.