As Michel said, some are not flat and competitions vary in Europe and here, so I will Judge as such
1
I don't particularly like the Grey he has used as a shadow colour on the yellow, as it kills it a bit, but I cannot fault the painting itself, and we all know that light changes in various conditions. The light direction is spot on and it is an exceptionally well painted piece.
In UK competition Gold in Bas relief class
Europe Gold in flat class
2
I don't particularly like the sculpt, especially the faces, but again this is not the criteria.
Painting is again excellent, when viewed from afar the centre figure protrudes and the rear ones retreat. Painting of the faces could be a bit stronger, but the painting for the style is flawless. Boots could be a bit darker, but knowing photography I should think in reality they probably are.
In UK competition Gold in Traditional Zinnfiguren group
Europe Gold in flat class
3
Basic block painting! 2 tones- with a hint of highlight here and there
However the painting is very good and it could be said flawless for the style. For me it lacks that depth, especially the hair, and compared to the first 2 , it needs that extra highlight to make it pop
In UK competition Bronze in Miscellaneous class ( is it bas relief- just a piece of carved flat resin ??)
Europe Bronze
4
30mm and very well composed, and they do look very well painted, but the photo hasn't done it any favours. From experience I should think it is Exquisite, hard to judge but I will give it the benefit of the doubt
In UK competition Gold in Traditional Zinnfiguren group
Europe Gold
5
painting is a bit bland and colours tend to wash into each other, especially the feathers on the hat. The armour needs to be more pronounced with depth and shine. The basics are definitely there, it does need a bit more work.
6
Exquisitely painted, cannot be faulted except it is not a flat, as we define them.
In UK competition Gold in Miscellaneous class only
Europe Gold
You may not agree with me, but I think I have been fair and honest. Will be interesting to see what others have to say.