Here are some more pictures how I do my piecing...
After this, I iron the fabric with the teflon shape inside; then remove the shape and iron the fabric again.
I sew together the pieces without the teflon shapes inside.
What I like about using the teflon shape for this shape is that I get better points... when I use paper templates, my finished fabric shapes are often a little longer than the paper shapes because I cannot really feel where the paper point is... tricky to explain this in English ;)...
On the downside: it is a little tricky to remove the teflon shapes after ironing. All in al, I am very happy with the result.
I will go for more shapes and let you know how this works out. Cheerio until then