Size is key: do not use your regular glove (size), go larger. My experience is that it is especially important that the liner is not too tight in the glove, allow the liner a little bit of air.

Size is key, liner: rather a bit tighter than too loose. Not a must but I do like that a liner kinda sticks to your hand and is therefore hardly pulled out when you take off your glove.

Another point of attention when choosing a liner is the length of its cuff.
Long is warmer, but sometimes an inconvenience. Maybe you have a "thick wrist" already because of your layering, or the sleeve has become too narrow to slide the liner in all the way.

TIP
On cool days, e.g. late autumn, I dare to use a thin liner with a thin somewhat wind-resistant full fingers glove. Because a winter glove is still too warm. So liner in the chilly morning, no liner (layer) on the way back in the afternoon when it is warmer.