Sometimes I will give some very vague directions to the designer that I'm working with on a particular project and they'll come back and surprise me with something that really shows a lot of their own 'hand' in it. Other times I'll have a really clear idea about how I want it done and I'll draw it out pretty precisely and say 'make it look exactly like this' and it will be something where it looks like I can say it was 'fully my design'. The work can also range between the two.