Is the different text size intentional?
Makes it rather weird and, feels off.
Could use a little trick to make sure things stay at the same size.
Nope. I assume it is due to me using TextScaled. I will try to fix it, thank you for the feedback!
Yeah thats cause of TextScaled however i like to add an object to my buttons or whatever else holds text thats automatically scaled called UITextSizeConstraint, then i set the max font size which makes things more pretty
Its kinda crazy to look at. I would make it a bit more simple then have words all over the place so then the player can just look at one part of the GUI.
Yep, it seems to be a pretty good substitute to TextScaled as what is shown in the image I provided does not occur. Thanks!
This I can definitely agree with. I did not want to make it too simple and tried to go for the more crazy side. Thanks for that! I would have never looked into that myself unless you told me about it. The golden man is not very eye catching and just takes up space.
I honestly feel this GUI is just a bit off in multiple ways that have already been told to you. So I decided to just remake it for you, if you know what features you want, then just tell me and I’ll put them in place of the Lorem stuff.
To have the buttons be functional, simply put very slightly visible buttons over the buttons and script them accordingly.
WOAH! You definitely did not have to design this, but anyway. This is leaps better than anything I could accomplish. Especially since it is an image (and lets just say I don’t really do good with those) but yeah. This looks wonderful, I am sure you are very experienced in UI design. Anyway, this shows that I have a long way to go before I can even ATTEMPT to make good UI for games or any of that matter.
It is nothing really, took me a few minutes. Just pick up a software and it’ll come to you. I have only made a few UIs over the course the few days I have been doing them/learning how to do them. If you are interested to see my other UI, check out my portfolio!
Btw, feel free to tell me how the UI on my portfolio looks. 
Some of the best UI I have ever seen. Huge well done.
Thanks, man/non-binary gender, I really appreciate it!
Looks like you got heavy inspiration from Arsenal, looks a bit bland but nice on the eyes. Maybe try and add lines like @MasterFrigophobia used.
I actually have not seen most of Arsenals UI but I did in fact take inspiration from the Roblox UI itself you can see this as I use the Gotham font and use round edges. I will see the UI in Arsenal as you sad, as I might see how good UI is done. Thank you for pointing this out!
Little thing to note, Arsenal’s UI is kinda bland in my opinion. While good and professional, it doesn’t have too much detail.
Decent but if you made certain changes it would look miles better. To start you should add some dropdown shadow off of the buttons to make it pop more.
Also make using a different font will help you and the spacing of the text could be done a bit better.
The button text reaches the boundaries of the button which i wouldnt do.
Also whats up with this corner up here
That corner is probably from some slight misalignment of the strange side 3D shadow thing.
I have a shadow underneath the main frame and I have not aligned it properly. I had no idea that was the case. Thanks for telling me!
No problem! I would just go over all your uis with a fine tooth comb whenever designing. This is why i dont do ui often 
What software do you use to design UI? I’ve been trying to get into UI design for ages, but I never seem to be able to make anything decent.