I do both too! Sometimes I start something and half way through think ' oh, so and so would like this'. I made a quilt for my Mum's bed and she chose the fabrics - never again! In future, I decide on the fabrics. I hated what she chose and really didn't enjoy working on the quilt. No when I go there and see it on her bed, I think 'yeuch'! So in future, I'll let people pick vague colour schemes but I'll pick the fabric! Is that mean? Naaah - they should just be grateful for what they get, right?
K x