Firstly, I wish a wonderful mood to all!
And now the answers:
I am convinced that the name of the contest is all right, because we and what is inside us is also the world. Our, a small, but the World. Except to add one word: "Share your (own) world".
What about @steembasicincome? This is a good choice, becouse of an opportunity for a long-term existence.
For sponsoring, my level is too small, but in the future, when it will be more relevant, with pleasure.
I don't think that your contest needs a big alteration. Just keep following your inner feelings.
Assuredly, I don't mind. ;)