Translation - Bulgarian-English - в тихата коледна нощ желаем ви едно едничко-успех...

mislq che prevoda ne e tochen

,Christmas night'
,I wish you only one thing'

Also there should be rhyme

Doesn't it sound better with "peaceful" instead of "calm"?

Yes I think "peaceful" would sound more natural.

Do you agree elina?

I`ve just changed "calm' for " peaceful"

If you prefer rhymes, I suggest:

Wishing you good luck
That all my words can tell
On this peaceful Christmas Eve
And for all the year as well.

However, the meaning is slightly different.
But I feel like a great poet...

Oh, Do you think it`s better


On this peaceful Christmas Eve
Wishing you this only thing
Good luck in everything

Wow!
Stop me before
I rhyme more...

"We wish you one small thing/ this one thing - success in everything you do" - literally.
I'm not sure the meaning of "the only thing we wish you" is positive enough.
luck is good enough for "success" and sounds better.

By the way the first rhymed version sounds neat