Ektoh-One

Unfortunately im at belief that someone tried to jack my car last night from a parking lot. Right by where the button is on my door to unlock the doors, the padding to where the window slides into the frame , its all ripped up and slightly pulled out. Now when i try to close my window fully, it comes back down halfway. How much of a pain in the *** is it to get that fixed and would anyone recommend i fix it myself if ive never done it before? Apologies for the newb question and if its been asked before.