A year ago I converted my son's old bedroom into a home office. It's become a haven, a place where I blog full time, sew, craft and relax. The office took a little over a year to really complete. I tend to be a slow decorator, only buying pieces I really love for a space. Check out the full transformation from Bedroom to Home Office in this post at Between Naps on the Porch:
http://bit.ly/QGdez6
The corner piece is just a square with the front and back corners cut off. Just a little bit in the back for cords.