A couple of things you can easily improve on is contrast on the red with some highlights using a paint like Troll Slayer orange.
The second is that your white looks to be corax white which can be very hard to work with.
Generally you’re better off picking a warm or cool grey base colour, depending on the white you want, and then highlighting white. For example Grey Seer base layered with ulthuan grey looks like a cold white.
Where wraithbone layered with Pallid wych flesh looks like a warm white.
That said, your painting is neat and the scheme is solid so you’re off to a great start!
The white was Pro Acrylic Ivory but it went over the red as I changed my mind halfway through the model on color placement. I'll try adding some Pallid Wych Flesh on the warriors to see how that goes.
As many squigs as I painted in the past I should have thought of using orange to shade the red but I'll give that a whirl too. Thanks for the tips.