Yokomen uchi kotegaeshi - don't grab with the first hand

Yokomen uchi ikkyo - don't grab the elbow or wrist until you are moving uke's arm downwards. This puts your hands in the correct position to do ikkyo

Yokomen uchi tsuki age - as uke, once nage's arm connects with yours, start to go with his motion; don't resist too much. Absorb nage's power by turning your body.