Getting face self tanner to not be blotchy

My daughter has been occasionally self tanning and we cat seem to get the face to not be blotchy. We're using the coco and eve face spray. She's tried spraying directly on her face, she's tried spraying onto a brush and applying. We just can't get it quite right. Any advice? She has a cheer comp this weekend and she's corpse level pale, so she'd love to figure this out. Thanks !