Help replicating a look

Hey everybody. I took this photo of a willow tree and when editing in lightroom, was able to make a luminosity range mask that gave me the option to visualize the range on a luminosity mask and the result was the second image which is just a screenshot. My friend liked the second one so much she asked if I could make her a print of it. I'd rather not use a low-quality screenshot for a print and am wondering if anyone can help guide to what I would need to do to recreate the effect in photoshop/lightroom.