Confirm my painting blueprint for 30k color scheme on 40k Units

I haven’t painted one model (brand new to the game) so I’m asking for a huge favor of a play by play breakdown to get this done.

Here’s what I bought:

Layer:

• xereus purple
• nurgling green
• genestealer purple

Technical

• typhus corrosion

Shade

• poxwalker
• agrax earthshade
• nuln oil

Base

• death guard green
• leadbelcher
• rhinox hide
• balthazar gold
• wraithbone
• castellan green

Primer

• Black
• wraith bone

And then I bought the army painter starter brush set and master dry brush set

Models: Deathguard combat patrol 3 deathshroud bodyguard

What am I missing to finalize the 30k paint scheme on 40k units?

If I’m not missing anything where do I start and how do I navigate the different paints / brushes for this specific scheme?

Ty all in advance!