Not too bad at all Chris, much better than my first attempt at camo anyway
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Glad to see the Blu-tack / Silly putty idea worked out for you too.
Is it the photos, or is the base green showing through the Brown in a few places? The brown is a strong colour and is painted solid on the real thing; Therefore the lighter base coat shouldn't show through on the model.
Did you use Tamiya acryllic 'Nato Brown?' I have used that colour twice, and both times ended up with a patchy finish where I filled in between the demarcation lines..... no matter how much I stirred the paint before and during spraying. I bought both lots of paint from the same store and thought that it might have been a bad batch. Did you have this problem too?