Hello !

Okey i have to write somethin, but i have no idea what to write this box :) Hope this counts ;D

Hello

Okey i have to write something, but i dont have idea what to write in this box, i hope its work.

tks

Hello.

Okay I have to write something, but I have no idea what to write in this box :) Hope this counts ;D

Well done. As informal writing, this is fine.

Be encouraged. Write more.

Hope this helps.

Native English writers often overuse exclamation marks (!)  too!!!