Thin and shape the bottle brush base
Begin by thinning out and shaping the brush that will form the base of the miniature Christmas tree. Your tree can be any size that will fit with your miniature scene, Christmas Village, or dolls house scale. If your brush has too many bristles the lycopodium stems will break when you try to insert them.
Brushes with fewer strands will make more open Christmas trees which are better for showing off hanging ornaments. Try to make your brush resemble the one in the photo.
Use a bit of modeling clay or scrap of dry floral arrangement foam or styrofoam to hold your brush stable while you add the greenery.