This pattern will show you how to make your own Advent Calendar with Christmas tree, including the round ornaments.
This pattern is 17 pages (including a cover page), with step by step photos for assembly.
This pattern includes both the written instructions as well as a chart for the wall hanging.

My wall hanging turned out to be 15 inches wide and 15 inches long using the supplies listed below.

Patterns aren’t refundable, but I’m happy to help if you have any questions, so please feel free to reach out if you need.

Supplies:
4.5mm hook
1.5mm hook
Yarn Needle for sewing in ends
Wooden dowel – 18” x 5/16”
6mm safety eyes (50 of them)

Wooden Numbers – I found the ones I like on Amazon. They’re .98” round if you’re wanting something similar.
Specific Item: Amosfun 1-30 Wood Number Shape Pieces Embellishment Mini Unfinished Wood Cutouts
https://www.amazon.com/gp/product/B07PQZJG9C/ref=ppx_yo_d...

I Love this Yarn
Aubergine
Dark Olive
Graphite
Ivory Tweed

Knit Picks – Curio #10 Thread
Serrano
Clementine
Canary
Jalapeno
Blue
Eggplant

Strand of twine, jute, or cotton yarn for hanging.