I love the idea of spelling out 'birthday' using products, very clever!
My photo is the view out into Tampa Bay from a fave spot that is no longer there we used to go there a lot before we moved.
Here is my birthday spelling -
B - Butterfly/Brad
I - Ink splats
R - Ribbon
T - Template
H - Heart
D - Doily/Date
A - Arrow
Y - Year

I used -
Sweet Doll - Sweet Templates vol.1
https://www.oscraps.com/shop/Sweet-Templates-Vol.1-by-Sweet-Doll.html

Maya de Groot - Brocante kit
https://www.oscraps.com/shop/Brocante.html

et designs - Lost in a Book bundle
https://www.oscraps.com/shop/Lost-in-a-Book-Bundle-by-et-designs.html