Rather than simply thinking “look up!” which can tilt your chin and stiffen your neck and shoulders, think of touching the back of your neck against the inside of your collar. This will help you align your upper body with tone rather than tension.
About the author
TarrSteps is a Citizen of the World (aka Canadian) currently working with young horses and "problem solving" - for both horse and riders - in the Surrey area. She has dabbled in most horsey disciplines but loves eventing because there is always another question to ask and another answer to find.