draw 'til you drop!

This weekend I will be going to "draw 'til you drop" and I'm really looking forward to it!  I have not done life drawing (except portraits) in over 10 years, so this should be interesting.

I have prepared a number of panels - old paintings gesso'd over.  Then I tested one by doing this:

I wasn't sure if the border thing would look good - I made the border by taping off the edges before applying gesso.  This seems to work OK, with the drawing going over the border...