While exploring some areas around Isfahan I found a remote village Ashtarjan with a very old Ilkhanid mosque Jameh Mosque of Ashtarjan ( 1315–16 ). The mosque had some simple geometric decorations. Here is one of them.
In this short sketch we will analyse and reconstruct this pattern. This is very simple but very useful work.
Step 1 – basic network
Step 3 – lines of the pattern
Step 4 – colors
Step 5 – an extra decoration
Step 5 – final pattern
Below we have three instances of the pattern. The first one is just a larger template created from four copies of the template that we made in the previous step. NOTE – we use four instances of the small template by rotating them around the central white star. Below we have long frieze with four copies of the larger template. Further down we have a larger allover pattern with 16 copies of the larger template.
Patterns like this one are often good starting point for some more complex designs. Try to think how to extend the white star into squares and octagons.