I got tired of recreating the same guides and shapes every time I start a new mockup so this evening I put together a new photoshop template and I thought other people may find it helpful. Sample of my 950px grid layout file Its a 48 column, 950px wide template with 3, 4, 6 and 8 columns layouts built in. Feel free to download, modify and redistribute to your heart’s content. 950px_grid_layout