I agree, moo is the one to ask about NMM but the advice he gave me is the same. you have too much mid tone and not enough extreme highlighting. You have made a great start It has taken me ages to get to a decent level of NMM and it really does take loads of practice.The blending could use a little work, colours are good, but too segregated because the blending is off. It looks to me like the paint was a tad thick and the layering didnt blend in as much as you'd like to see for NMM.
Sorry mate i wasnt knocking your efforts i was just suggesting some tips .I know but its the best that I can do cause when I was painting I was getting frustrated the the highlites would not blend they would rather dominate when I was painting but the advantages with metal models is that they are easy to stip and start over.
If a glaze doesn't work too well, try using a different colour, can i recommend trying scorched brown, or if you're feeling brave, watered down brown ink. If you need to lighten the mix then add some snakebite to it so that you're essentially layering with glazes but with transitional shades aswell.Oh, my thx moo, Ive tried too glaze but bubonic brown is just such a weird colour, it just dosent go on smooth even if I did wet blending it just dominates all attempts at making it mix nicely with the darker colours, and when I paint I try and paint in one direction so not to have streek marks but somehow the lighter colours just,.... this is very hard.
Also RE-NMM do you mean this