Give me ideas to improve the Uis

Hello! I am making a new game and these are my early uis I made. But I feel like they are so ugly so please give me some ideas to improve these. Thank you!
robloxapp-20231118-2023511.wmv (8.3 MB)

Use this things
image

The UICorner to this
image

And the UIStroke this
image

Also change the icons with plugins