1.Bu görsel dünyanın kurgulanmasında ben profesyonel biri değilim.

kurgu: abstract thought
kurgulamak : It may be translated into English to be "design"

I'm not one professional of/in designing this visual world.


2. Neydi beyefendinin adı? Tamamen uydurmuş.

I think using "make up" is likely here.
What was the name of the gentlemen?. He made it up.
However, if you had written the sentence following " Tamamen uydurmuş", it would have been more clear to understand exact meaning. But it seems to me that using "make up" is correct.


3. Selanik asıllı, gizli Yahudi, 'dönme' de deniyor.. Şu sıralar yine ayukka çıktı bu konu......

dönme, dönek : inconstant, changeable.
dont think dönme in the meaning of rotate or rotary.

Ayyuka çıkmak: (for something) to be known by everbody.

As a matter of fact, you are right again. "Mutlu yıllar" can be used to say " Happy new year". But dont forget that it can mostly used to say "Happy birtday". You can use it in either way.

You can also say "Mutlu yıllar". "Mutlu yıllar" is mostly used. However, "Doğum günün kutlu olsun" is correct as well.