Get the zipper just started, about an inch or so zipped just enough to hold it. Then you want to tuck the door seam in. Imagine the end of the too that goes into the door surround as a square, just missing the side that where the surround sits in (like a "[")One side of the square will tuck in behind the door surround, one side sits flush to where the door closes. Once you have it tucked hold it there... You may want to recruit someone to help you the first time... Hold it once its swayed correctly then Zipper it fully, Velcro it and tuck the underside underneath the bottom ridge. Hope that helps.