When gluing, make sure that you
don't overload the card board. Only a thin layer of glue
is needed. You should just be able to see the white of the
glue. If you use too much glue the result can be a soggy
mess! The water based glue will soak into the card and reduce
the overall strength of the model. It will also take longer
to dry if to much glue is used.
We always keep a set of tweezers handy
when model making. One the glued surfaces are put together
they can be nipped tight with the tweezers quickly starting
the bonding process. Tweezers can also get into places
where fat fingers can't reach.