I've been Shimming many of my Atomizers for a Long Time. Not so much to change the Direction they point, but to fill up the Gap that many of my Atomizers have between the Mod and the Atomizer Base.
I've found Many Things around the House that worked. From CD/DVD Sleeves to Plastic File Folder Covers to Racing Bike Inner Tubes. Simply Punch a Hole with a Paper Hole Punch and then cut an OD Circle to size.
Then I found these and their Small cost kinda made doing DIY Shims seem silly.
KP Mod Guard 5 Pack- Various Sizes
ETA - If you Shim some Atomizers that have No Gap when screwed on a Mod, they might not make a good Contact with the Mod's 510 Center Pin.
So for someone like the OP, they might want to test out whether shimming Might or Might Not work by using some Paper or a Thin Business Card before they buy anything.