You're going to need something to stick the faceplate back on. It may snap slightly back into place, but it didn't hold for me. I used some transparent tape around the edges, but it doesn't look great. Perhaps some double-sided silicone tape or something. You don't want something too permanent in case you have to swap the battery again in the future.

There is a small circle sticker over each screw, about the size of the red circles in the image above. It wasn't clear from the directions what the "cover stickers" were. A small exacto knife was helpful to pry up the edge of each sticker.