Start with an accessory or a square
Hats, scarves and granny squares are good places to put a medium weight yarn to work. You can see the stitches clearly, and a smaller project gives you room to try a color combination before planning a whole blanket. Browse worsted weight crochet patterns for ideas, then read the materials list on the one you choose.
Choose a Spooly version for the pattern
Spooly, Spooly Rainbow and Spooly Dazzle give you different color effects. A simple stitch pattern can let a colorful yarn do the talking; a detailed stitch pattern may be easier to see in a solid shade. I would make a small swatch if I wanted to see how the color changes or finish look in the actual stitches.
Check toys and fitted makes more carefully
For amigurumi, I want stitches close enough that the stuffing stays inside. The size of your hook or needles is super important for that as well. A smaller hook can close gaps, while a different tool size can change the finished dimensions. For a sweater, hat or anything where size matters, I make a swatch and compare its gauge with the pattern. Matching the yarn weight is a starting point, but fibre and your tension also change the finished fabric. The yarn selection guide has the full checklist.
Find your yarn
Compare the exact Spooly version and color you like in Ribblr materials with the pattern's yarn weight, gauge and required length. If the designer used another yarn, the substitution guide can help you decide whether Spooly will work for your project.

