How to recover your own bike saddle- wtb devo carbon recovering

A few months ago my favorite saddle (WTB Devo Carbon) was looking a bit worse for wear and I had some high quality marine grade vinyl laying around.  I decided to recover it. 

Fast forward to last week-  the material was still looking almost perfect, but my "glue job" was a bit lacking (I'd tried to use some inferior glue).  I decided to redo it again and take pictures-