Feedback on Customize Gui

[FlyingFrets (daniel)]

How could I improve this Ui? There isn’t much else I can add and I’m blanking at the moment, anything I could do to fill up the blank space?

[robloxfannumber6 (pool)]

Not really much, you could try to just space the buttons out more unless if you want them to be like that

[Hazelfluff]

The content isn’t centered in the space.

You could add some embellishments

(but then you might feel like adding them to the entire UI, so perhaps a subtle background image or gradient would suffice)