A hand sewer must have excellent spatial intelligence and the ability to visualize three-dimensional textile creations while looking at two-dimensional sketches. Sewers must be patient and methodical, not prone to rushing, and will often have to work long hours to meet emergency deadlines. In many cases, a portfolio of past work is more important than a lengthy academic pedigree; many sewers, however, pursue degrees in theater arts or fashion design, which are quite useful when applying to couture design houses. Sewers must have healthy hands, wrists and arms; strong eyesight is another important asset, particularly for theatrical professionals who need to do some last-minute sewing backstage by the light of a single, dim lightbulb.