Blocking before piecing?

Sould I block my panels before I piece them together to make a blanket? Or do you block the whold blanket together?

Thanks for you help

I’ve never made a blanket like that, but I would think that blocking them first to a specific size would make it lots easier to seam. Then reblocking it when it’s done would make it look finished.

NOTE: if you are using acrylic disregard the above comments… Acrylic does’t block.

I am using cotton.

Thanks for your help