How do you properly put make-up on and how do u noe wat colour skin tone u should use 4 foundation?

alot of ppl mix up their skin tone and get a darker or lighter shade of foundation or concealerHow do you properly put make-up on and how do u noe wat colour skin tone u should use 4 foundation?
i've got a nvq in beauty therapy and the way that we do it in the industry is by trying it on the jaw bone, down to the neck slightly. if it blends well, then it's the right one. don't try it on your wrist, as a lot of people have darker arms/wrists than their face due to more exposure to the sun. if you want your face to look slightly more tanned, then don't go for a darker foundation (it's a mistake sooo many people do - but it just makes you orange instead), just get a suitable foundation that matches your skin and buy some bronzing pearlsHow do you properly put make-up on and how do u noe wat colour skin tone u should use 4 foundation?
for foundation match it to your wrist,if it blends good and don't look to dark it's the one you should choose.
you can go to rite aid or another store that has a return policy..if the shade doesn't match, return it for somehting that does :)
try it on your wrist if its dark don't head for it . also don't get ones which look heavy on you