You don’t need to write an introductory text about who you are and describe your topic. Just take the printscreen created automatically by Photoshop and just compress it in a .ZIP folder and send it. That simple! Follow the tutorial https://developer.samsung.com/galaxy-themes/overview.html
About your theme:
In HOME, the Dial and Camera icons are very dark, make them lighter, highlighted.
Those too. Your icons are really beautiful, but very dark.
Try to make the writing clearer and the background of the icons too, so the icon will be more prominent and the internal design too.
The numbers on the dial, make them a little clearer too.
Contact icons too, make it clear.
In general, in messages, settings, make all icons and writing more clear
Practically impossible to see the icons. And the main script, make it a little clearer too.
Change those icons too! Caution! Keep them aligned and proportional sizes. By Photoshop and file configuration, small distortion can occur, correct them!
And that white line that remains is a file error, to give it more charm, fill it with the main color of the wallpaper.
See, I filled in the line, correcting.
My English is bad. sorry.