First of all, I recommend you to use the same pic and the same coloring I used, so it’ll be more simple for understand what to do.
step 1. apply the coloring to the photo
step 2. sharpen the background layer
step 3. duplicate the background
step 4. go to filter > blur > gaussian blur…
I have this settings, but you’re free to messing around with them
step 5. duplicate the layer where you’ve applied the blur filter (now my layer tab is similar to this)
step 6. switch the first blurred layer (the bottom one) to blending: normal and opacity: 14%
step 7. switch the second blurred layer (the top one) to blending: screen and opacity: 60%
step 8. save the pic in .png and you’ve done!
obviously the effect change with every photo that you use, so you’ve to messing around with the settings (like the opacity, etc…).
hope it was helpful, if you’ve problems tell me :)