Do you have what it takes?!
Here's my criteria to help delusional fans realize that they have little to no shot at being cast through SM's Global Auditions.
Are you North East Asian (Korean, Japanese, Chinese, or Taiwanese)?
Are you South East Asian with a light complexion?
If you are East Asian with dark skin, are you willing to bleach your skin?
If you have nasty teeth (i.e., Japanese), are you willing to fix your teeth? (Okay, other Asians have terrible teeth, too. I had to get two molars removed and have some of my teeth realigned before I got braces when I was 12.)
Are you willing to get double eyelid surgery, a nose job, and/or a jaw shave?
Do you even know Korean or a similar language?
tl;dr: If you're not Korean, Japanese, Chinese or Taiwanese, don't bother. You're not going to be the first white person to debut in an idol group.