How to Contribute
There are many ways.
Have fun with turtle-graphics. Maybe teach your kids that way. And send in fun designs.
Play with the notation in a design context. Add whatever extra notation you seem to need. Then report back on what you learned.
Find ways to get some task or another done with Sophie as-is. (I’m thinking physics homework.) Explain what you did and your workflow.
Useful functions are useful. Maybe you’re the motivation for adding something meaningful to the standard library.
Maybe you even contribute directly to the implementation.
In any event, if you contribute, you need to make sure the contribution is unencumbered by intellectual-property concerns.