I have made a new video demonstration using Pixlr - the free online image editor accessible from your browser. 

In this demonstration we show how it's possible to create a graphic image for use on social media, such as for your Facebook Fan page. Many of the regular Photoshop features such as layers, layer masking and effects are replicated on Pixlr so it is perfectly feasible to make yourself a handy graphic image even if your regular computer is out of commission. You can even save it online if you prefer. 

The video will play full-screen if you want to see the detail a little closer.