Again, please, please avoid your Caps Lock key. I'm not going to re-do this one though since there are very few corrections to make.

MY SPECIAL PLACE

I would suggest using "scents" there since it is broader than "perfumes". Perfumes are intended to be worn, while scents could include the scent of leather chairs, or polished wood, for example. I think you probably mean the general scents of the place rather than just the perfume worn.

I LOVE FERMO THEATER: IT IS NEAR THE SQUARE,IN THE STREET THAT LEADS TO THE DUOMO. IT IS BIG,RED AND GOLD,WITH A MASSIVE CHANDELIER AND CAN CONTAINS 700 PEOPLE!

"Can contain" or "Could contain". It would only be "contains" if it was for example "It currently contains over 700 people"

SINCE I WAS A CHILD I DANCE IN THIS THEATER EVERY SUMMER,AT THE END OF DANCE YEAR (AS YOU KNOW I ATTEND CLASSICAL AND MODERN LESSONS EVERY WEEK).

1/ "I dance" is in the present, but what you're saying represents something that has been happening for a while. The form would therefore be "I have danced". 2/ I think you may have meant "the end of year dance". I would suggest ending the sentence at that point and making the clause in brackets a separate sentence.

FRIENDS,PARENTS,OR CUORIOUS curious PEOPLE COME TO SEE US. To PERFORM IN THIS THEATER IS AN INCREDIBLE OPPORTUNITY!

You need either the infinitive ("To perform") or the gerund ("Performing") here.

I WILL REMEMBER FOREVER THE SOUND OF THE APPLAUSE, OR THE PERFUME IN THE DRESSING ROOMS, MY DANCER-FRIENDS OR  and THE PUBLIC IN THE DARK.

Or is used when you will remember one of these things  OR the other. In this case you will remember all of them, so you list each thing separated by commas and put "and" ( e ) before the last one. Actually I think there was a similar correction that I made in your other notebook entry but I ran out of space to make a comment about it.

I INVITE YOU TO VISIT THIS PLACE! I HOPE THAT THESE this INFORMATION ARE is USEFUL.

Information is always singular (it's a collective noun), so it's "this" rather than "these" and "is" rather than "are".

WRITE ME WHAT IS YOU FAVOURITE PLACE!

Write and tell me what your favourite place is.

"Write me" is an American idiom, but even then you would say something like "write me about your favourite place". I'm not really a fan of that structure so instead I've provided the more standard, international English equivalent.

WRITE SOON,MARTINA