Hello! I just completed a Loading GUI.
What it does (Spoiler you, Play it first)
It just fades in a Loading screen, teleports you to the other place and the other place fades it out. Simple
Play it yourself:
Video: (Spoilers you, Play it yourself first.)
Any simple (or not simple) feefback? 
Give me Feedback here:
https://devforum.roblox.com/t/what-are-you-working-on-currently-2019/218270/2274?u=sonnenroboter