Looking at this I have a few questions:
1) The print orientation - Did you print upside down?
2) The finish - The feature picture has obviously either been clear coated with silicone or polyurethane or is ABS that been through some type of acetone finishing, however, the green one looks to have much less finishing done to it and I was wondering how the finish on the green one effects the user's ability to yarn without snagging?
3) Infill - Seems to me ( I don't do anything with yarn mind you) that this bowl would maybe need to be at least a couple pounds. What infill percentage was used to get the bowl to enough mass to not just slide all over the place while the user is pulling the yarn through the hole?