It took a few completed star blocks to figure out my favorite way to press them. This is what works best for me.
When piecing, I leave all the seams free by poking the needle through the seam to the other side instead of crossing over it and sewing it down as in machine piecing. By leaving the seams free I can press them anyway I want when the star is completed.
Working from the wrong side, start on the lower right hand corner. Use your finger or stiletto and working counter clockwise, smooth the seams away from you, pressing a seam at a time with the tip of the iron. Avoid getting the iron on the very center, we’ll go back and get that seam later. In general, I am a fan of steam, however, I turn the steam off during this step because I don’t want scorched fingers. Note to lefties: You might have better luck starting in the lower left hand corner and pressing clockwise, try it, and let me know if it works.
When you reach the upper right hand corner, press one more seam with the iron pointed toward the upper left hand corner.
Rotate the block so the next seam you will press is now at the lower right hand corner. Repeat, smoothing seams and pressing, rotating the block as needed. Rotating the block helps avoid getting the hand holding the iron into an awkward position.
The pressed seams will spin counter clockwise.
Press the final seam open. Don’t worry if it looks a little wonky.
Flip the block over and give it a good pressing from the front side, with steam and a spritz of light spray starch, if you’d like.
There! A lovely little star block, pressed and ready for the “finished” pile!