Tips: keep your chin up and your gaze leveltry and picture your opponent throughout the kata, turn to face them when they move off the line, e.g. in kata no.2 and no. 4; when you're the shidachi try to 'see' the attack coming in.
practice the kamae (chudan/seigan, jodan migi and hidari, gedan, hasso and waki) positions by themselves. Make sure you are confident the both feel and look rightpractice rei and sonkyo by themselves as well.