Hey! Need help with UI resolution issue!

[Antstary]

Hey guys

So I'm kind of new to creating UI's for people to download and use, however I was just wondering if anyone had any tips on how I could easily upload a UI for a various amount of resolutions.

I have created one and my friend has tested it out. However mine was 1920x1080 and his was 1600x900.

So how would I go about creating a UI that is for various resolutions and also easy for the user to install!

Any tips would be greatly appreciated.

Thanks!
Anty