Here is the Games Workshop Baneblade kit (not the Forge World Baneblade kit which I don't think is for sale anymore) ready for painting.
I guess I didn't take a picture of the tank just sprayed black, but as you can see I base coated the entire tank including the bottom with black spray paint. Then I used blue painter's tape to cover the tracks so that I could just drybrush them later after the camo of the tank was done.
Then I sprayed the entire tank with a sandy off-white color. This is the beginning of my camo color scheme. You can see how I sprayed over the painter's tape, but the tracks underneath the tape are kept black.
Now that the tank has its first camo color on the model, I began to use the blue painter's tap to tape on a curved line camo scheme on the all parts of the tank. Note that I did each part of the tank separately to create a more complex camo scheme instead of just taping over the entire assemble model.
Then I sprayed the entire model dark green.
Then, after it was dry, I drybrushed the entire tank with catachan green. Note that the painter's tape is still on the model.
Then, after the model was dry, I remobed all of the painter's tape. As you can see, the taping has allowed me a very effective 2 tone camo scheme. The tracks are also ready to drybrush gray or silver.
Here's the Baneblade next to a Destroyer Tank Hunter I painted in a similar way.