Would it be wrong to make a spicy blog as under eighteeen? Or should I wait till I turn eighteen?
Wait until your 18. I know I was very excite to make a spicy blog at 17, but I waited until the day of my 18th birthday. Because you'll get adults interacting with you and things can get really bad really quickly. I can't control you anon, but I do heavily advise wait until your 18 and I think it would be a terrible idea if you're under 17. 17 is still not a great idea either though (but again, at 17, I too was considering making a spicy blog)
That's not to say you can't make spicy stuff. Trust me, making smutty fanfic made me a lot more comfortable with sexuality after being very religious up until I was 16. Just, I advise not sharing it publicly until your 18 for your safety.