I have made a fleece lined crochet hat before but I wondered what if I just trimmed a fleece hat-innovation or bad idea?

The hat was made using a sewing pattern.

I then used yarn and tapestry needle to make a blanket stitch.

I then crocheted into the blanket stitch.

It would be better with a solid fabric hat I think.

Definitely not as warm as a fleece lined hat.