well, you can make yourself more attractive in some ways regarding spells, like growing hair faster, or ridding warts, or clearing accne... but you cant chang into another creature or anything
While they do not alter the physical aspects of a person, they can make the person more appealing.
They fall under the category of Illusion magick. You may have heard of glamours in stories of the Fey Folk. When done properly and skillfully, they will make the person seem more radiant. Things such as brighter smiles, brighter eyes, lustrous hair, clearer skin and the general air about a person can be altered with glamour.
Obviously, as these fall under the category of Illusion, they are just that; an illusion. The are not permanent, and they expire if the caster lets them, loses concentration, or runs out of energy to sustain the glamour.
This is the closest thing that you will find to altering ones appearance with magick. Other will argue that you can use Biomagick, but I find that to be a bunch of manure.
Another less used method is self work. Any work that improves the way you feel about yourself, others and your life can make you more appealing/attractive. Many seem to overlook this in life. When you constantly think your appearance needs improvement (unless your a super model) others will sense this lack of confidence. That being said, do what you can to work on how you feel about your appearance. You could easily write up a spell for this. Burning lavender, catnip and morning glory (or any other herbs that promote happiness/beauty), while looking in a mirror and focusing on the aspects of yourself you find beautiful would be a simple way to achieve this :)
While magick can be helpful for many things, the true work to be done is within ourselves and not without. Magick may make you more appealing by spiffing up how you look, but the best way to become more appealing is to come to terms with how you are born, and find pride and honor in who you are.
Don't let the world dictate how you view beauty. It is something found inside yourself. The outside is only about 1/4th of a person.
I hate putting this worhtless stuff up for people to see, but I can't deny someone explanation for the sake of knowledge.
Biomagick is a relatively new "form of magick" that works with altering your genetic code on a microscopic level. It is done through meditation and energy manipulation, using these things to "change" how your physical traits appear.
You will most commonly find people who utilize biomagick are working on changing the color of their eye. I find this ridiculous for many reasons:
1: If that is all biomagick is good for, then it's not good for anything at all.
2: You can not change the structre of your genetic code simply by thinking about it.
3: If you want different physical appearances, get surgery.
I know that my reasons are rather unsupportive of my argument, but I have encountered people who claim to have used biomagick, and it working. The only thing though, is that they have only ever "changed" the color of their eye. They said also that it was not the iris that changed color, but the edge of the whites of your eye.
It is completely ludicrous. Please, for the sake of everything intelligent, go study protection magick or illusion magick; Anything really, just learn something worthwhile.