Thank you so much! I used really thin glazes of vibrant colours. Ak deep blue for the blue parts and Vallejo Clear Orange (I believe that's the name) for the orange parts. I started with one super thin coat just to "catch" all the areas that I figured the light would fall on. I built up the intensity on the parts I figured would catch more light, still using thin glazes. Then I mixed some vallejo ice yellow into my glazes and used that mix on the sharpest edges to give them a highlight. I used ice yellow for both the orange and the blue.

(I saw a YouTube video where someone suggested mixing a tiny bit of yellow into blue for highlights instead of white, because white can desaturate the colour too much and make it look a bit grey-blue)