I like Daisy as well. It makes it funny that I have it from Prof. 666
As for Mii creation...it depends. If you are trying to create something different, it is all a matter of forming a system and just working on it.
If you are trying to make somebody look exactly like somebody else it gets harder. The system works if you are creating your friends and people you know, because when they are actually using the character it reminds you of them more. Famous people and such are harder to develop and design, because you don't really associate with them.
I am personally running out of ideas for freaky Miis, but it is ok, because I have collected over 75 Miis to begin with and once I hit 100 I am going to have to do some sorting...and I don't want to do that.
When I create a new Mii, I start from scratch with a bald head. I think try to pick the eyes first and then brows, and then nose and mouth. I find the eyes are the most important aspect of getting the Mii right, everything else is secondary.