Little pnuemonic device a lá Smirnoff:
“My Dears! There is a difference between elevé and relevé! You cannot use the same word for both actions! They are different!
Elevé, you go up right away. Like an elevator. You push the button, you go up.
Relevé, you push the button, and first you must go down to the basement and then you go up! Down in plié, then up!
Understand? Yes! Now lets get to work.”