Arcos,
Don’t be so hard on yourself, we’d all like to be perfectionists and make everything absolutely right, all the time, honest, - we’d like to! On top of that you’re just starting out on this journey with wood.
You say it looks a ‘bit heavy’, I’d say solid, but the shape hold that well and does not look ungainly.
A couple of beasty trails, a couple of tool marks, but as you say, ‘It’s an experiment in removing a tenon’. Did you learn anything – good then it was a success.
As for a soup bowl, what do you think our forebears ate out of and predecessors at the lathe made, and out of Olive, I think that would be a fantastically rustic idea – you might just have a market at that one.
As for this one how about making it a matching pestle for grinding spices etc.