Sorry, no, I don't think I can do that easily without a possibility to copy gold filigree work from a good sized photograph. The similarities are not really striking anyway, but I asssume the size and overall impression could have been similar, although the tiara now with Princess Astrid has a more accentuated and prominent base and the centre part comes across more like an add-on or surplus, while the design of the tiara in the painting clearly focusses on the three upright elements.