Instead of painting a whole squad at once, you paint just one to see how you like the color scheme. It's also a chance to figure out what colors you're going to use to get your desired effect.
Here's selection of some of mine:
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The reason I'm bringing this all up is that with the unit I'm currently painting (the bloodletters), I wanted to forgo the usual test mini. I figured that they're mainly just red so how hard can they be?
Another reason I didn't want to paint a test mini was this it takes the limited painting time I have away from the unit as a whole. I really wanted to bang this unit out quick. Plus, I don't want to agonize over this unit too much. I'm more of a Tzeentch/ Slaanesh kinda guy, you know?
I painted the Bloodletters this week but didn't post pictures because I'm just not happy with them yet. I think I've come to the realization that it's harder to work without a goal in mind.
Here's what I mean. I started with a white under coat and started with a couple layers of Blood Red.
The first shading layer was Blood Red mixed with Red Gore(1:1). This layer didn't show that much, but I figured that as it was just the first layer.
I did this on all 8 miniatures in the unit. This took about three painting sessions (yeah, I paint slow).
The next layer was pure Red Gore. However, the shading wasn't really coming out the way I wanted. After I painted about half of the unit, I added Dark Angels Green to the Red Gore and painted one mini with it.
This one miniature looked OK, but I had too many questions. Is this final layer going to be dark enough? Should I add some Black? should I strat to build up some highlights? I wanted to work some purple in there; how would I do that?
I came to the realization that I'd have to paint a test mini. I hope I can nail it on the first try and not have to paint three of them.
What about the rest of you? Test miniatures: Good, bad? Waste of time? I'm open to suggestions if you have them.