I used the transfers from the Imperial Guard Tank decals, and a bit of 3mm Hardboard / Fiberboard to base it - you'll need to base it otherwise it will flex and the paint will fall off. Firstly roughen the surface with fine sandpaper so the paint will adhere. I sprayed with chaos black on the inside as they are see-through, and then the outside with car spray (VW Tornado Red) makes a good Khorne Red. I attached the container using epoxy resin. I added a drop of waterd down old Citadel Chestnut Ink as grime streaks, Agrax will do fine.
The only piece I used from my bits box was an old SM Vehicle hatch on top, and the next WIP tanks have an additional spare ladder from the new terrain kits (an off cut from a Titan Weapon conversion). Here you can see the hardboard / fiberboard.
You can embellish the base however you like, an earlier set I did HERE in 20102, I used barrels and sprue offcuts and Rhno doors for a barricade, and some plastic plumbing bends for pipework.
Size wise it is perfect to hide Imperial Knights. And this cost pennies, the car spray being the only purchase if you haven't any suitable sprays - but that I had from the previous tanks in 2012, still fine.
Hopefully this gives someone an idea and helps them out, for me, its more easy terrain.
Have a great New Hobby Year!
HAPPY 019 M3 !!
Cheers, thanks for dropping in. Siph. (Terrain = 5 painting points)