british challenger 1 mk3

I have this tank painted in model master middlestone have done the wash but I am having a problem finding the right color for the final drybrushing any help will be great an thanks in advance tom

Try something like Sand 33531 or Radome Tan if you are looking to highlight raised detail on a Middlestone base color.

or just add a bit of flat white to the colour u used for the base coat.

thanks for the help