It is a smooth rectangley thing of beauty! I can do this with a standard, full, queen and even king, no problem. Seriously, a normal sheet looks perfect when I'm finished with it. I can grab two corners, pinch them together with my right hand, slide my left hand down the edges of the sheet, find the other two corners, pinch them together, and that's all the fight in that sheet.
There are so many things that I have the intellectual and physical capacity to do, but fitted sheets may be my greatest nemesis. It is a humiliating and time consuming experience for me. I tried to fold a fitted sheet last night, 'tried' being the key word here.