You should not be knockkneed. This will stress your knees and make you vulneralble to knee kicks. Avoid excess tension so you can feel the correct position. The pinkie-side ulnar bone surface should be most forward. Proper elbow position is about a fist and a half from your ribs, with elbows in and in front.
Proper position makes a front kick attack quite difficult.
Like a sports car suspension. Pelvis locked under. Remember half hard, half soft. Chin down to protect throat. See sections on sanchin breathing and mushin.