Safe? Probably. A bit messy but you could vape on them. 2nd one you might be able to improve by putting it back in your drill and reversing it to loosen the coils, push them tighter together and reverse the drill again to tighten.
When learning to make coils remember KISS... Keep It Simple, Stupid. Start with a simple 1 strand basic plain old coil to learn how to get a nice tight even wrap.
Then try a simple clapton.. 1 strand core wire wrapped with 32ga wire. Now most will say use higher ga than 32, but when you are new, 32 means you can SEE your coils better, then use thinner wire as you get better.
I suggest starting with enough wire for 1 coil at a time, then you can do 2 or more as you get better.
Next you can do a parallel build using 2 strands of untwisted wire which leads to fused claptons.
and of course... you can always go with a Deadalus Coil Wrapping jig. Make sure it come with the drill that was made for the jig. (prevents your wire from jumping)
https://www.fasttech.com/p/9382300
