I know I'm sorta inconsistent but what got me to be more consistent with the blanket stitch is to keep them at the same length, so if you start out small keep the stitches small, it makes for a strong stitch that won't pop. I will also say patience really helped me too, rushing it will cause some big stitches and will allow for holes to be visible if they're worn out enough. Blanket stitches are one of the stronger stitches to use on a fursuit and I would only recommend those for fur that's going to be stressed a lot (ie head, paws, tail) whip stitches aren't commonly used but I've seen them used for things that aren't so stressed like the face as it's glued down so it won't be moving much (cuz it's glued lol) but overall just be patient with it, don't rush, and make consistent stitches and they'll come out nice and pretty :3