VBO comes with a default e-ticket design.  If you would like, you can create your own e-ticket design using HTML and the available placeholders.  The ticket design can be edited on a global level for all events and also can be edited on a per-event level. 

Global Level - To add your own e-ticket template on a global level, go to SET UP > EVENTS > DELIVERY SETTINGS and click "custom e-ticket." 

Event Level Override - To add your own e-ticket template on a per-event level, go to OPEN EVENTS and select MANAGE TICKET DESIGN from the "select action" drop-down menu on the event you want to modify.

Here is an html e-ticket template to get you started. E-Ticket.txt