I hope this is the right part of the forums, I'm completely new to inkscape so please go easy on me

I just started to put together my own icon set for my computer and was hoping to re-create this icon

I found alot of people used inkscape to create their icons and was wondering if this is possible? I tried doing it following this guide http://ryanler.wordpress.com/2007/05/23/inkscape-sticker-with-folded-edge-tutorial/ to curve the edges of the page but this only seemed to work when the fold is a straight edge, whereas the icon has a curved edge and I couldn't seem to achieve this editing the path.
Any help would be great
Gaunt