Few tips:
When tightening your post screws, make sure you leave a screwdriver shaft in the coil, then while tightening keep it level to prevent the coil from twisting up or down.
Make sure your coil leads go right through the center of the post holes
Don't tighten your screws so hard they sever your wire
After everything is tightened down you can take some tweezers and scrunch the coil tight again if it separated and correct any tilt from tightening your posts.
Make sure your coils are still positioned directly over the air holes
Before wicking dry fire it on your mod and make sure both coils are glowing evenly
Strum them with your screwdriver or tweezers if they're not like the coil is a guitar string
Stick with it! If your first build fires at all you're ahead of the pack.
This is the pic of my coils