My first ever tutorial XD, as requested by pushing_pin
I hope it's okay and i explain it clearly :)
Going from this:
01. Open your image and resize it to the size you feel is right, i chose 600x400
02. Go to Layer >> New Adjustment Layer >> Selective Color
And enter the following;
03. Make another selective colour layer
Enter the following;
04. now flatten and add whatever you like .... brushes/text.
Hope it works out for y'all.
Please show me what you come up with, i'd like to know if it worked!