Haha I love that pic with the caterpiller. Anyway, I consider flowering to start the first day you switch to 12/12. How long have they been in veg? If you did it too early, it will take a while to get into heavy flowering. Stop spraying her if you're in flowering. It can lead to bud rot. I don't think incense would be bad as long as its not filling the room with smoke and the plants have good ventilation. Good luck