Seema,wanted to know the way of working the long and short stitch. Before trying a tutorial I want share some links on long and short stitch which might be useful.
http://embroidery.about.com/od/Embroidery-Stitches/ss/Satin-Stitch-Long-And-Short.html
http://enbrouderie.com/2011/09/15/long-and-short-stitch-explanation/
http://www.needlenthread.com/2009/08/long-and-short-stitch-lessons-index.html
http://www.theunbrokenthread.com/blog/2011/09/23/long-and-short-shading-going-deep-into-the-stitch/
these two are videos-


If these links are useful, fine. I don’t know whether I can do a better job than these people. Still ,if required I’ll try the tutorial.