That's the wonderful (and frustrating) thing about rebuilding. When you get it right (for YOUR taste) it's an awesome vape.
Like others have said..
Stay away from sub ohming until you have the equipment and knowledge to give it a try.
You may like it or you may not. Personally, I build between 0.7 and 1 ohm, unless it's going on a regulated device, then I'll build 1.4 ohm max.
Always torch your wire & silica before winding.
Torching the kanthal will release the tension in the wire and make it hold its shape muuuch better.
Torching the silica wick will burn off any impurities from manufacturing and help it wick better.
If you have to build with the device attached to your mod... Take the battery OUT first. Because sooner or later you will accidentally fire the mod causing either a burnt finger or heaven forbid a dead short.
After you have built a coil and before loading it with juice, pulse fire it. This will burn off any oils left from handling and show any hot spots. If you're using cotton, pulse fire it before installing the cotton.
Building micro coils is fool proof using a
Coil Winding Gizmo. No heat.. squeeze.. heat.. squeeze yada yada. Just wind & install.