Continuing working on getting my skills back up to par and trying some new products out. I purchased these Rust Effects by Model Mates at Salute and am now trying it out on the Dark Imperium Death Guard as they are perfect candidates.
I started off by base coating the swords with Leadbelcher and used a red ink in the recesses.
Next was to apply the rust effect like you would paint, the trick with this rust effect is that you can build up the rust with several layers and each layer will give you a slightly different effect.
I also used it on the metal symbols hanging from the backpack.
If you are looking for an easy authentic looking rust effect then use this.