As I'm sure you're aware, I use the Army Painter dipping method to paint all of my troops. I've had a go at painting a Celt using this method to see how it fairs on a mostly flesh figure. The following is a methodological sequence from start to finish showing each stage in clickable picture form.
First, I sprayed the miniature with a white primer available from Warlord Games. Once dry, I blocked in the flesh colour.
After that, I blocked in the gold (bronze) on the shield and the sword handle.
I then used a colour from my WWII collection (German Camo Beige) to paint his trousers.
I then painted his hair and shoes. Note: not taking care on the hair! But I would go back later and touch up the flesh.
I then painted in the shield colours.
This photo shows a comparison of the miniature before he was painted with the dip and afterwards. As you can see, it's superbly shaded the areas you would want it to. The photo on the right was taken immediately after he was painted with dip and as a result, looks 'wet'.
This picture is a comparison before and after, this time showing the rear of the miniature. As you can see, it's done a great job!
I stand by Army Painter or the 'dip' method as a great way of getting better looking miniatures without having to be as good a painter (which I am not). If AP wasn't invented, I probably would have just left the figure how it is in the left of the comparison shots. I actually think the AP can make figures look more realistic than using the traditional shading method. Please note that this miniature still needs to be matte varnished to remove the shine.
It must have taken me about 20 minutes to paint this miniature (very brief drying time included in that!) and I could easily paint a warband within an evening or two using the method!