You will need:
Helmet:
6 x 12 x 9 craft felt in main colour or 1/4 metre felt fabric
Contrasting felt for trim
cotton to match main felt
Optional: circular felt decoration from trim
Tabard - quartered back and front
2 x cotton pillowcases in colour A
2 x cotton pillowcases in colour B
Cotton to match
Tabard - plain back, quartered front
1 x cotton pillow case in colour A
1 x cotton pillow case in colour B
1 x single flat bed sheet
Cottons to match
optional: to add coat of arms to tabard - felt shapes or embroidery threads, or fabric paints.