Replaced battery and the screen is now messed up.

I need help! I had a failing bettery in my iPhone 5s, so i purchased a new battery with the toolkit that was required to disassemble the iPhone 5s. I took apart my phone while watching a tutorial so i wouldnt mess up at all, i did everything exactly how i was supposed to, but it didnt work. The new battery was putting out a charge because the screen lights up when i press the home or power buttons, but the touch is rarely recognized on the screen, and the screen looks like an old TV set on a blank channel (just a black or light grey screen with a few different colored lines/rectangles). As you can probably tell, this is not supposed to happen. I think i may have damaged the digitizer cord and the LCD cord, but i really dont know and i really need to be able to use my phone this next week. Please, anything that comes to mind just write it down, even if you dont think it can help! I really need my phone to work!!!

Also it takes charge, siri function works, the only problem is the display on the screen and the touch recognition, for as i said the screen lights up and shows lines or rectangles...

Hope somebody can help, Thanks!!!