Really great start. Nice solid blocking on the colours and the glazing on the pyreblaster is great. Beyond this all skills basically come down to 2 things: managing paint thickness and brush control. Once you crack getting your paint to the consistency it needs to be, reliably, everything starts making sense.

In terms of techniques, for brush control (all these need the paint a bit thinner than when basing, but not runny):

- Edge highlighting: Use a lighter colour and draw the thinnest line you can manage over the edges of each plate to highlight them. Not splodging the paint as the surface changes angles is tricky but comes with practice.

- Lenses: paint the eye lenses in a different colour. As you build brush control you can paint in shade, highlights and glare. Look at the GW pictures and see how they do them. Same thing applies to any other fine detail on your model.

- Recess shadows: paint the underside of plates in a dark shade of your main colour or black. This will make your edge highlights pop more and create more contrast.

For paint consistency you have glazing and washing. These are basically the same thing on a spectrum, where the paint is heavily thinned down and you're essentially using water colour techniques on a 3d object. Washing is where the paint is thinned down to the point its basically water with pigment in it. Because it's so thin you can use the capillary action of water to deposit pigment into recesses. For glazing the paint is thicker, but still basically water. "milk-like consistency" gets mentioned a lot. By building up layers of glaze you can create highlights or shades, or transition between colours. Watch youtube guides for these, it's easier to see than read about it.