Boao 4 Pieces Wall Display Banners Blank Wall Canvas Banner Enamel Pin Banners for Display, Buttons and Label Collections (Beige White)

Is this canvas material, which is described as "thick canvas" appropriate for hand embroidery? Is it too thick and more aimed at machine embroidery?

Is this made with any amount of polyester?

Can permanent markers be used on these? Will they bleed? Is the fabric too rough?

Do the enamel pins stay up by themselves or do you need the pinbacks to keep them up?