I haven't seen this pattern for the Viking apron-dress before, but it makes sense. The trim on the side is wrong, though; on the extant piece from Hedeby, the trim was placed over a dart.
Atelier Verdande Around 1290 the Surcots were so tight that they had to tie up the side. Under the lacing of the fabric of the petticoat was to see what attracted so many eyes on her. Fashionable, this extended sleeve opening enlarged to the "hell box" Surkots the 14th and 15th century.
side lace apron overdress - Google Search
Renaissance Ren Faire Medieval Gown Dress Costume Brn S | eBay
Medieval Irish Clothing Patterns | Irish Dress - Medieval Fantasy Outfit & Tutorial Link - CLOTHING