You may need to double or triple the pattern size, depending on your needs.

Make sure you check in with other housemates before using it for your costume.

Measure around the widest parts of your head and arms for a comfortable fit.

Try the pillowcase on beforehand to avoid putting holes in any awkward areas.

In the series, Dobby has worn: a tea cosy hat, a tie patterned with horseshoes, soccer shorts, a maroon sweater, many hats stacked on top of each other, and scarves. [4] X Research source Don’t forget a pair of brightly patterned, mismatched socks!

House elves have particularly large ears. The ear length depends on your own head size but will generally be about 6 inches (15 cm) long. Purchase elf ears online or at a costume shop as an alternative.

Some Dobby costumes skip the nose and use makeup to make their nose look longer. Use this option instead if you dislike the feel of prosthetics. Spray paint the nose several days to a week in advance so the paint fumes have time to dissipate. Coat the nose in face paint instead if you are sensitive to spray paint fumes.

“Master gave Dobby a sock!” “You shall not harm Harry Potter!” “Bad Dobby! BAD DOBBY!”

Don’t creep out the person dressed as Harry Potter. Give them space, especially if you don’t actually know them.

Do not steal anyone else’s socks. Firstly, Dobby would never steal and secondly, you don’t want to cross the line between an accurate costume and a creepy one.