The rough and ready design complements the Weasley twins so well, as being poor and making something ephemeral, they would have made them as cheaply as possible. The offset numbers, wonky Weasley logo and simple but fun tri wizard cup drawing, make sense in this context. The offset and misaligned elements also add to the handmade charm of the design which evokes the mad Weasley twins minds.
On the actually betting slip itself, the off-set, letterpress-style, typeface continues the handmade look and the unusual roulette wheel illustration behind the betting box and the magical symbol in the “stake” section, gives the tickets that little air of mystery and magic
that lets the viewer know, this was made by a wizard.
Check out MinaLima’s website here (not spon) where you can buy a wonderful signed print of these very tickets https://minalima.com/