imperative or negative question

Dont' (you) worry = negative command (The additional 'you' is regional, just adding emphasis.)
Technically, a comma is necessary before 'child.'
(You) see, Heaven's got a plan for you.
[ All of these should have a period at the end. Note that the first sentence, with the proper punctuation could be a question: Don't you worry while he's away at war? ]

Thank you , what if i wrote this without you in the middle? Would meaning change? the emphasis you mean is like I care , I do care?

I guess it really a matter of emphasis as one of 'personalizing.' Don't your worry your little head about it!

Thank you , as I was told , 'Don't you worry' is like 'I do care' , am I right?

Yes, that could fit in certain situations, even like "I'll take care of it" or "I'll see to it".

Thank you so much

It's probably very close to üzülme.

Oh my *** , how could you know what my own language is? and can you speak my own language?

The image indicates that you are in Istanbul. I lived in your lovely country from 1967-69.

Oh it is so nice that you have been in Istanbul