From screenshots above I can suggest you following
Hint color should always be of lighter shade as compared to the color of actual text.
Hint should be small in terms of length. For example Email (or Email Id)instead of Email Address, ‘Password’ instead of ‘Enter your Password’ or ‘Set A Password’.
Reconsider the spacing between components.
Along with using different fonts(as suggested by other users in the community above), also adjust there sizing. Currently the login and sigup text looks much bigger.
You can also add icons to to buttons and beside text-boxes resembling their respective action/meaning. But this would be the last step for me after doing every possible thing to enhance the UI. I would only do this, if it’s needed
I found same post you have created and added Login and Signup Screen with aia and now you have created new post and added updated version of same post.
Don’t post same topic, it’s against the policy if you are updating any app then update the previous post.
Here’s your previous post link -
This may look good in some cases but not always.
I am saying this because users mostly read the text on screens from left to right. And this, being in the middle would be quite uncomfortable, I guess.
Just a suggestion though