Here and there I keeping hearing about liner install difficulties especially with 4sided 90 degree ponds. So boom, here’s your new little pond. Your “box” is 60” x 43” x 28” deep. You have the correct liner. The inside of your box is green treated ply and the bottom is 2” certifoam. If this was yours, could you take me step by step on installing with it not looking like how I made my bed this morning? I watched the videos (vague) and my books pretty much say “ then install your liner” which is real helpful. Thanks pond dwellers! Peace, Sparky