I started by heading out to Michael's with my trusty Michael's coupon app on my phone which saves me 40% on one item and 20% on my entire purchase. I picked up some craft smart craft paint for only $0.69 each in various shades of green and a bright yellow. I already had a metallic green paint that I had picked up some months ago.
I then just went to town painting my letters. I didn't care too much if the paint went out of the 'lines' of the stencil as long as the letter was still readable. I think this adds character and makes it unique. Even though I am basically copying the design from Pinterest, I don't mind it looking like the homemade project that it is.