The "Draw Layer" text is intended to distinguish between layers you can draw in and layers that have photos. Currently, there is only ever one Photo Layer in Draw. There is also currently no support for naming your individual layers. Such functionality has been requested before, but it has yet to make it on our priority list. Thank you for the feedback and the feature request. I'm sorry I can't say if or when it will make it into the product, but there are a number of other enhancement we have in the pipeline.
Hope that helps,
Frank
Draw Engineering