Ok those are just like the diamonds I am doing.
I will take photos tonight
but you need very fine interfacing
put a piece of fabric and a piece of interfacing right sides together.
Take the template and place on the fabric side of the two. Now you can paper piece or or cut the true size dab a little glue stick and place on the fabric and sew all the way around the design ( you are sewing on the wrong side of the fabric). Take the template off trim as close as possible to the stitching as you can get away with. ( I use 1.2 stitch length for this it won't fray). Ok now on the interfacing side you are gonna cut an X in the interfacing. Because this is soooo small it will not turn easily so just make the X fold the interfacing out to turn the fabric to the right side facing you. Now fix any points and tuck remaining interfacing under the wrong side of fabric give a press and you are now ready to hand applique it to your block.
I hope that is helpful and I will get some photos to show.
Cher :wink: