I need to make a bridal shower cake and was thinking of decorating the cake with a draped bridal dress on it. Can someone explain how to do this, if you know of a link , you can copy it and share. Thanks

I'm not sure exactly what kind of cake you're thinking of. Here are a couple of examples of cakes I've seen a lot on this site. One is three dimensional and the other is two dimensional.

3-D bridal gown
http://cakecentral.com/modules.php?name=gallery&file=displayimage&pid=1271611

2-D bridal gown
http://cakecentral.com/modules.php?name=gallery&file=displayimage&pid=1308311

Here's a link to a tutorial for the 3-D dress:

http://cakecentral.com/articles/779/how-to-make-a-3d-wedding-dress-cake

Okay, I couldn't find a tutorial for the 2-D dress, but here's a link to a thread where some decorators discuss ideas for creating it.

http://cakecentral.com/cake-decorating-ftopict-625918-.html