I made this small tutorial on how I apply Dry Brushing for those who haven't tried dry brushing.
Here are the things you will be needing for this process.
Paint - I always use my Tamiya X-11 Chrome Silver for dry brushing
Paint Brush - much better if you use your old one because you will be intensively brushing it to the part which might ruin your brush if you will your new ones.
Paper - this is where you will be brushing first your paint brush to remove some excess paints before brushing it to the subject.
Lastly is the part you will be applying the Dry Brushing.