Make a sheet cake--size of your choice. Do a basic boarder. On the surface of the cake make a pair of knitting needles with wool coming off the ends of them which spells out/makes the message on the cake--"Happy 90th Birthday Mamaw!". String all the letters together like one long piece of wool. In one of the corners you can create the round ball of wool. You can roll the knitting needs out of fondant. The balls of wool can be made of fondant. The cake can be buttercream.
Also, google knitting cake and you will get lots of hits.
Get Inspiration and Great Deals
Yes, I want to receive new decorating ideas and exclusive offers from Wilton. You can withdraw your consent at any time. Learn more