yes, But I would suggest that you try on something before you apply to the real thing. You need a very soft touch and different colored inks. Coat the subject with adhesion promoter (spray) then weather or dry brush with a wide soft bristle brush like those used by cosmetologist or dilute the ink (rust colored) for a more runny or rain rusted effect. You can either do a pound technique, swipe technique, or drizzle technique. Again test on something else before you apply to your real subject. The objective it so highlight areas of the subject that have been explored to the elements, darkening, shading or the rust colors effects as I mentioned above. Common trick to weathering model tanks, cars etc. For instance, on rally car models, use a mix of tan, mud orange color for mud stains on the or around the wheel wells, tan on the windshield etc. if you're not handy with a paint brush you can use the same ink mixture in a air brush and feather spray areas a specific color. For a more heavy effect that adds a rough edge to the subject use oil based paint and cake it up around edges to create cracks or parts being pulled away.Then feather paint these edges with the dry brush.
