Great suggestions out here, wow so much for myself to look into as well.
I would say to Makayla (great name!!)
Just follow your heart, sings whenever you can, do scales, vocalise, take lessons. Don't do waht I did. I happend to have finished my education and ll that is good, please do that, but then I wnet and worked business jobs for years, ebing unhappy underneath and trying to fit my coverband into my busy schedule and actually I was alwasy too tired for singing.
So sing! It has to be your priority. finish your school, but belive in yourself and do not let it get undershadowed, because these days we all need to be younger and (erh Iam 29 but I look sexy enough

I hope, it is more about sex apeal then age hopefully lol

).
I just worked and worked and got older and now have so much catching up to do.
O yeah try and write some original stuff, it is real good practise, l;earn to play an instrument, so you really learn to sing to musc and in key and then youcan write (tadaah if you already have some poetry/or diary stuff it will work just fine). So you can really LOVE it even so much better. I love music even so much more now I got some original stuff.
O yeah, covers work fine to get noticed so go for it.
Get training and schooling and lots af advice, but listen to your OWN Heart, ok hon????