The first of the artistic bits.
Using scissors, give each tree a haircut to form the desired shape you want for each tree. The finished article will be very slightly bigger...so try and shape each one so it looks .......well, tree-like! Or like a nude tree;theres no leaves yet!
The second artistic bit...and I should have mentioned earlier that you wouldn't be needing the dilute white glue until now.
Dip a tree into the dilute glue, shake off the excess, and dip into whatever colour scenery flock you want. Squeeze and tease the flock into the matting until the tree is formed how you want it.
Finish off by dribbling glue all over the flock to make sure it will stay in place when the glue dries.
Stick the tree into some foam, etc to dry, making sure that and glue that runs out doesn't do any harm!
And here's a few finished trees. Don't touch! They're still wet!