I have a really cute idea for a tshirt

Ta

And I don't know if I should design it or not, I'm worried no one will buy it, it's mommy related and I think it's so cute!!! Should I just go for it? There's a website called teespring that you can use to upload your tshirt design and depending on how many people want it, if you hit that amount, they'll produce the shirt for you and you get the profit, should I do that? Or idk...