Four years ago, I published my "Little Mittens" pattern. As my kids grew older, I added more sizes. I decided to officially update the pattern with more sizes and more guidance. I made YouTube videos of myself demonstrating the techniques, and links to those videos are in the pattern.
The pattern now has eight sizes to cover ages 1-12. There is a schematic, many measurements, and a photo gallery. I also changed the design of the fingertips to look more polished.
My pattern is available here: https://www.ravelry.com/patterns/library/little-mittens