I'm following a tutorial and it told me to use a layer mask > hide all then use a gradient and make a random shape selection and hit delete and the gradient color should show through the layer mask but when i press delete NOTHING happens, i've even tried inverting the selection etc and it still wont work.. Is my photoshop or comp just being a dick or is there a simple fix? The tutorial can be found here http://www.tutorialized.com/view/tutorial/Dazzling-Hot-Poster-Girl/53864 and its about 1/3 down the page.
Thanks!!