1. Grab your base.
I used this icon base I made of the amazing Audrey Kitching.(:
2. Go to Layer > New Adjustment Layer > Selective Coloring.
Input these in the following order:
REDS
100, 57, -36, -11
WHITES
39, -23, 36, -26
BLACKS
-33, 72, -11, -7
My image looks like this so far:
3. Now, to add a little vintage and color in it,
make a new layer.
Fill it with the color 2a00ff.
Then set it to "Exclusion" and 20% opacity.
My result along with other examples:
Enjoy~! (: