The pattern is Deep in the Forest by Tuulia Salmela. The yarn is Jamieson’s Spindrift in Natural White and Pine.
Now the changes I made: Provisional cast-on of 60 stitches on 2mm needles. Completed the cuff, folded it, removed the provisional cast-on and knit the two ends of the cuff together. Then I knit 1 round, increasing to 70 stitches. At this point, I changed to 2.5mm needles and knit the rest of the mitten as written.
I did not find the chart difficult to follow, but I did copy and increase the chart to 11” x 17” paper.
I really like the Latvian braid at the cuff. I would use this again sometime, maybe on a hat? I wear hats. But not mittens.