Using the MG Gouf 2.0, I recreated the battle scene between Ramba Ral's Gouf and Gundam in a diorama (sorry that the scene overlaps with someone else's 💦).
The Gouf is fully painted with lacquer, then given enamel washing and dry brushing to create sand and dust, and light peeling paint (no smudges as this one hasn't been used much).
The white lines were recreated by painting them white first, then sticking thin masking tape on top, painting blue on top, and peeling it off.
The monoeye is H-Eyes, and the front side of aluminum tape is attached to the back with clear rubber adhesive to make it reflective.
The backpack has a hole cut out at the top

Gouf Unsheathing | nan_koromaru21's Gunpla works