If you want to create a sleek updo using a twist-out pattern (especially if that updo is a puff), it may be necessary to smooth out part of the twist-out so that it is smooth against your head and not bumpy due to the curl pattern. You need to smooth without sacrificing the curl definition of the part that will be in the updo. Here's how to do this!
First, use your hands to smooth out the hair that will be smooth against your head in the puff. This means the front, sides, and the back of your hair.
Smooth out the roots of the twist-out only at the front, sides, and back of your hair (same places that you smoothed with your hands.)
Now, you can see the part that is smoothed out, and the part that is still in defined twist-out curls. I spray the smooth section with water and use some aloe vera gel for a very smooth, sleek look.
I then can gather my hair using the faux puff method. I separate the twist-out for a full look as described in this post and voila!
To keep things smooth, I tie a scarf around the hair that isn't in a puff while I am sleeping, as I described in this post. The next morning, all I have to do is fluff out the puff. The hair not in a puff is nicely flat against my head.