Here's a pattern Iwrote about two years ago that I never posted :) bear in mind it is very old so not that great but I guess it does what it says on the tin.
Today my lovelies i bring you a free pattern for the above stars.
You could use them as coasters, hang them as decoration or join them together like in the below picture and make a cute decorative blanket like I plan to :)
2.75 mm (Size C usa) Crochet Hook
DK yarn I used robin DK
Tapestry needle (or any needle with an eye big enough for yarn)
SS - Slip Stitch
Ch - Chain
SC - Single Crochet
DC - Double Crochet
Create a slipknot on your hook.
Ch 6 and slip stitch into the furthest Ch from the hook.
Ch 2, 9 DC, SS into the Ch 2.
Ch 2, work one DC into the same space as the Ch 2, *Ch 5 and SS into the third Ch from the hook Ch2 then skip one DC then work 2 DC's into the next DC* repeat from* until you finish the 5th 'Ch 5 and SS into the third Ch from the hook Ch2' then SC into the top of the starting Ch2.
SC into the first DC, SC into the next 2 Ch, SC into the gap made by the Ch3 loop. (SC Ch1, DC SC) into the two loops at th top of the Ch3 loop. Continue going round the star like this until you're finished.