Hey, Mike,
I will post the steps here. First picture is the Tamiya weathering sets I have. I like these and I find I get a very subtle effect to very heavy handed. As you can see, they each come with a sponge like application pad on one end and a fine, soft brush on the other. I tend to use the pad for the heavy handed things like exhaust staining and gun fire residue. I used the brush application side for all the salting effects.
View attachment 271059
The next picture is picture is the plane as she was this morning. I wanted to go a little heavier in the inner wings and the fuse just forward of the windscreen. I wanted to go a little heavier with the salting in these areas.
The next is a shot of the applicator with the sponge loaded up. I did
not use this applicator. I just wanted to show it to you.
Ok, this is the brush loaded up. This I did use.
Note that the snow effect has been added with a rather heavy hand. One thing you need to be aware of is that the final clear coat will reduce the effect of the pastels. I had already shot one coat on and I was not happy with the reduced effect. Hence, this application.
Lastly, here is the same shot
after a fresh coat on clear flat. Here you can see the reduction of the effect after the clear coat.
I hope this helps out, Mike.