Here is what I am currently struggling with - sheer, silk organza (chiffon?) with slight texture to it.  I needed a long sleeved black blouse for a chorus performance.  With no luck finding one RTW, I decided to make one, and use this as a learning experience for sewing with such fine, slippery fabric.  I have actually avoided it as long as I've been sewing (30+ years, off and on).  Until now, that is. 

Sewing with this is painstaking.  I bought silk thread based on some googling which suggested that poly thread is too thick and heavy, so I am using that. I also read a tip that, to keep the seams from puckering, you sew a strip of tissue together with and under the fabric being sewn.  This makes a noticeable difference - without the tissue, the seam sort of puckers, but more sort of twists.  The tissue stops that, but it is extremely slow work - hard to place on the fabric, hard to keep all the layers straight, somewhat tedious to  remove... just a slow process.

Also, I am tinkering with fit, which I am usually too much in a rush to do.  After trying on the shell I saw that the buck was puffing out above the rear darts, so, I basted the back seam line (twice now) to get the right fit, and get it to lie flat.  I noticed that the shoulders are far too wide, so those are pinned back for trimming before the sleeves are attached. 

Where possible, I have used French seams in this garment.  Again, this is painstaking with this fabric and especially with the tissue, but I love the look and professional appearance... even if it's only on the inside.  Again, a technique that is new for me.  A good one to have learned, I think.