From the perspective of someone who isn’t a UI designer the UI looks clean and pops out, though the “Obtained” notification is something that wouldn’t pop out much to me since it’s all the same color (same text, same title color, same background color).
This alert UI looks awesome! It’s very clean-looking, and the style/theme of it is great! Nice job on this UI! How long did it take for you to create this UI? I rate it 10/10!
love these. not cartoony, but not all-gray white icon modern either!
i’m curious how it would look if the stroke gradient wasn’t completely transparent here, it just looks like it got completely cut off.
warning shield icon could have an exclamation mark on it. the shape could also be more like (
) to differentiate from the error icon.
success icon is oriented a bit off, i can sense it 
rotate it a tiny bit clockwise!!!
looks beautiful 