Here are the final images of the Flinger.
Here is the initial model (after priming).
I first painted the main part of the Flinger with a dark brown (left photo) and then painted the rocks black (Middle). I edge-highlighted the rocks to make them pop (right).
Another photo of the edge highlighting.
Then I painted the metal bits a nice silver (left photo). Then I added some wood extras (I painted the wheels) in the right photo. Unfortunately, I forgot to take photos for the rest of the model and so they are not able, however all I did was just paint the leather bits in a tan. This model has no base, so basing is unnecessary!