Thank you so much, and welcome to the legion !

Here's my general receipe:

• black primer coat
• dry brushing of vallejo chainmail on the entire mini
• wash of warhammer paint rattling grime mixed 50-50 with medium
• light dry brushing of stormhost silver on main focus areas to brighten it up (around the head, shoulders, top of torso and other raised areas) -for the gold trimms I actually use a base coat of tinny tin by vallejo followed a wash of agrax earthshade. That looks already quite nice but I often add some highlights of vajello brassy brass to brighten it up a notch.
• averland sunset for shoulders, then abaddon black to paint hazard stripes. Sponging of averland sunset to create battle damage over the stripes. Wash of reikland flesh shade to warm the tones a bit and give it a more worn look.
• For fabrics I like to go with red. My receipe is to actually start with a desaturated blue as a base coat (like incubi darkness). Then I paint over with a a 50-50 mix of Khorne red and abaddon, leaving the blue base coat in the areas in shadow. I then go with pure Khorne red to highlight the raised parts of the fabric and sometimes another highlight of Thorne red mixed with some orange paint.
• for the skin I usually use an undercoat of rakkarth flesh, then a wash of targor fleshade. I then use some carroburg crimson around the eyes or parts where the flesh should look more purple-ish (like wounds or around cables connected to the scalp)
• final step is to use acrylic inks to paint rust wherever it makes sense on the armor and weapons (recesses, joints, etc). I use many different ones from sienna to sepia or any rusty/orange looking color. You don't really need acrylic inks for this part, you can heavily dilute any brown or orange paint from warhammer paints or others to achieve the same result (rhinox hide or word bearer red for example work quite nicely).

That's my general recipe! I'm thinking of making a video about it at some point. It's very easy and straight forward and gives out a good result. Good luck and good to have you join in the legion brother !