So you want the new members to stand up to veteran artists and ignore the crit? If anything, they need to grow some balls and learn that this is not a site for congratulating every attempt at 3d or 2d work. Grow some balls and learn when you're not as great as you thought you were. Grow some balls and accept that if you're being told what's wrong with your work, you need to learn how to rectify it if you're serious about it.