A swamp and its family and relations are rarely seen and that is a pity as they offers interesting strategic challenges. Seem to favour static armies with a lot of guns where in fact it can also become a deadly trap if the enemy manages to outflank you?
A mire cannot be tiny. Otherwise it will be just a dirty spot on your gaming table. The right diameter is about 12 inches.
1. Start by creating a www.wargaminghobby.com/article/terrain-bases-20.html (base) of the right size. Watch out for the cardboard warping syndrome!
2. Put a layer of plaster-like putty (filler, spackle or whatever it is called in your country) around the edges of the pond. The layer must not be to high — just a couple of millimetres to mark the edges
3. Fill the pond with water following my guidance on how to make realistic water
4. A swamp has to include several treacherous patches of grass and semi-stable muddy ground. Draw their edges with a marker going for natural, rounded blobs
5. Paint all those non-watery areas with thinned plaster or filler to matt them
6. When the areas are dry, paint them green
7. Cover the non-watery areas with static grass and make it dirty with earth-coloured paints
8. If you really need to you may glue some brush bristles as reeds. It looks great but I don?t recommend it as the bristles will break easily in transport and will make moving units cumbersome