Learn to Crochet!
Crochet Gif Tutorials: Invisible Decrease
The invisible decrease is slightly more difficult than the standard decrease, but it can look great in amigurumi projects - because you can’t see it’s there!
This stitch works in the front loops of the stitches only, which you should be able to see clearly in the first gif.
(P.S. You might notice that the stitch I end up with in this tutorial is very loose. This was so that I could clearly illustrate the technique. Try to crochet a lot tighter than this if you can, especially if you’re using this stitch for amigurumi.)