I placed some glasses on the fences while they were drying.
I cut out some thick 3mm card board for fence bases. Then put the fence on the card and mark the ones touching with a pencil - done by eye sight not all will be in contact with the cardboard base. I used hot glue gun to attach the fence to the base.
It makes a pretty big difference to the look.
I unfortunately ran out of coffee stirrers after buildign four sections of fence. So will have to make some more later.