The above star is Vellum but I used designer paper for the tutorial so you can see what I did more easily.
If you are making your star from vellum or acetate you may want to make a pattern and then cut each square individually with a craft knife so as to not get any fold lines on each section.
Fold you square diagonally in half,
Then in half again,
Hold your triangle with the centre fold towards you so the open corner are away from you.
cut 3 slits from the folded edge towards the open edge, do not cut all the way across leave about 1cm,
when you open it up it should look like this
using your glue dots curl the centre section together as below,
Then flip the paper over and repeat in the opposite direction,
keep turning it over until it looks like this, bend one of the corners to make a flap as below
this flap will be used to attach each coil to the next until you have made a star shape you may want to use something a little stronger than glue dots for this but if you are using a wet glue be prepared to hold it for a while.
Fold you square diagonally in half,
Then in half again,
Hold your triangle with the centre fold towards you so the open corner are away from you.
cut 3 slits from the folded edge towards the open edge, do not cut all the way across leave about 1cm,
when you open it up it should look like this
using your glue dots curl the centre section together as below,
Then flip the paper over and repeat in the opposite direction,
keep turning it over until it looks like this, bend one of the corners to make a flap as below
this flap will be used to attach each coil to the next until you have made a star shape you may want to use something a little stronger than glue dots for this but if you are using a wet glue be prepared to hold it for a while.
Hope that all made sense, any questions let me know!
Abi