Backlight shows on edge & Fuzzy screen

I had a full screen replacement (digitizer and screen) on my nexus 4. For some reason the screen can be lifted slightly around the top edges, like its not been completely fitted properly. I can see the back light inside and i'm able to lift it more. What is the reason for this and is it easy to correct?

Also when i press the power button a few times a fuzzy screen appears, although its not an issue, it must be due to one of the connections.. What could that be too?

If someone could let me know the courses of these issues and let me know if they are fixable that would be great.

Thank you.