How do you make your game look 'nice' with all the different device sizes?

My game looks excellent on iPhone 5, but when I view it on iPad/iPhone 4 it's all dis-configured and buttons are overlapping.

So I play around with my graphics and make it look decent on iPhone 4 but now it looks retarded on iPhone 5.

Any tips on making your HUDs look decent across all devices?

 

For every item like buttons etc uncheck √ "Stick to edge". For Splash screens give yourself some space around your logo so that it can adjust for sizes. I usually add back splash screens in Xcode (resources Folder) when some don't come out looking right.

 

try playing around with the buttons, stick to edge.
Maybe try not ticking stick to edge.

 

Thanks guys!

 

and this setting along with above suggestions...