For this unicorn I used:
Caron cakes in ‘Rainbow Sprinkles’ 3mm crochet hook. A smaller hook for the horn and maybe a lighter weight yarn Some good quality toy stuffing. 12mm black safety eyes A needle for joining pieces
You’ll need to know: how to do an adjustable loop - tutorial included single crochet (US terms) invisible decrease - tutorial included
You can of course use any yarn and the smallest hook that works with it.
Orlando is worked from the bottom up and has a cute spiralling horn. The horn does look best if worked with a smaller hook.