BadJMan

Can Some please help me? I am new to this sensorpanel stuff. The issue is whenever i try to add a background image it is never the right size and always is big. But i have designed it according to my screen size that is 1280x720 and my sensor panel size is also that. And annother issue is that the image is always infront of the other elements, coveringg them. And also thje bg image looks pixelated. How can i solve this?