That is a joke spell. It looks well written though, but as others have a said you don't need a spell to become a witch. Also it says some crazy stuff about flying whenever you want which isn't possible.
i start in meditation =) visualize something then try to smell it if it is a flower or anything and it works for me it was like that thing i saw in my mind was not actually in that room but i smell it like it was there with you.
Witch is just a title, you want to be a witch, call yourself a witch.
Now witchcraft is more than spells [some witchcraft users don't even cast spells] so if you want to be a witch you should look at 'the basics' of magick and study a couple paths to figure out what works for you and shape your path.
What interests you about being a witch? Do you just want to cast spells or is there something more?
Congratulations! The good news is that you became a witch once you decided to do the spell, the bad news is that the spell itself was a total travesty designed to disappoint you and crush your hopes and dreams. If you want to do something as a witch and get good results you don't have to do anything extravagant. Things like meditation, chakra work, energy healing, knowing your intent, listenning to your intuition, etc. are all really effective ways you can grow as a witch. And, while you can't just go around flying on a broomstick hear in the physical realm, if you learned to astral project ( takes years for some people) you could be in that vibrational plane and fly around. Which, is what I read most about people doing once they've mastered astral projection, there's more to it but a lot of people find themselves flying around mostly. So, try not to let your hopes get up or be crushed by any of the bizarre fluffy spells on this site, you just work on yourself, keep focused on your intent, and you'll find that power your looking for. It won't be flying on a broomstick though, hence the term practical magic:)