How to design

[gross38970256cumn]

1.  Would someone know how to create something like this

[Dean_Utian]

Are you asking how to create the part with the flowers or the full graphic with text?
For the flowers, you need to write a descr description with all the details you can.
Firefly is not good at inserting text into an image.

See teh page below for tips on writing prompts:
https://helpx.adobe.com/firefly/using/tips-and-tricks.html 

[creative explorer]

@gross38970256cumn what you are trying to create it appears is cherry blossoms on a blue background. What I do sometimes is upload a photo as a reference for Firefly to use. try this as an example or play around with it