Hey ! I'm looking for a perfume that smells heavenly and unique, without being overpowering. The kind of perfume that does not scream its presence, but that calmy reminds us. Do you have any ideas ?
Note: i'm a Guy, but i'm ok with slightly feminine fragrances, and completely ok with unisex.
Try Parfum Satori. I think most of their scents seem to fit your description.
“Heavenly” imo needs a little hint of feminine touch. These all are unisex or with some kind of feminine tone in them.
➡️ Absolutely unique floral
➡️ Excellent contrast of notes
➡️ Dark, seductive, enveloping
➡️ The most neutral creamy, powdery perfume ever
➡️ Creamy, warm, resinous
➡️ Creamy and woody
➡️ Irresistible fruity leather
➡️ Oriental floral, I don’t know why men haven’t found this one.
➡️ Rich floral but amazing on men
➡️ My husband’s favorite rose on him
Trust me on this, try "Safari | Abdul Samad Al Qurashi / عبدالصمد القرشي".
If by "heavenly" you mean angelical, I'd go with Another 13. It's a skin scent, not overpowering at all.
If you mean otherworldly, you should try Encelade or Aldebaran - they're very unique, almost extraterrestrial.
Jade Amour
Neo Eden
Lucid Dream
Magie Rouge
Cappadocia
Inverness
II-IV Kintsugi
Coco 
Safanad
Rose Omeyyade 
The Dreamer 
Comète
Jersey 
Infusion d'Iris Cèdre
Soleil au Zénith
Orchidée Vanille
Armani Privé - Figuier Eden
L'Envol 