I want to knit a sweater. I have never knit a sweater before. I realised gauge matters - that is, for you muggles, how many stitches per inch you produce, so that you have the same amount as the pattern suggests so it will actually come out the same size as you want.
So I decided it was time to swatch, but knitting swatches is boring, so I knit a pair of wristwarmers. Look, pretty!
(They're actually black and aqua)
Now, the gauge is off, so I have to swatch some more. What next?