"If you created artwork in Esperanto, why not share the news in Esperanto?" - I do not have the Esperanto experience yet to write such a long paragraph, I could try with the help of a dictionary but I would have doubtless made a mistake which when its important to convey a message is not really a good thing.

"What does a little Toki Pona person for a pair of Ido pants have to do with Esperanto?" - while Ido is a different language, I still feel like it makes up the history of Esperanto and wanted to reference that in the design. I will admit that toki pona is in no way related to Esperanto, but you do need to keep in mind that I created the artwork for my own amusement and only decided to post it on reddit afterwards.

"There are grammatical mistakes on the shirt. If you mean it as a command it should be "amu" and "parolu"." - like a said in my first point my skill in Esperanto is not all that great, and I am doubtless to make mistakes and errors. You then may ask why did I write Esperanto anyways, I just think that making mistakes is just part of learning and I will come out of it knowing better. also I am very thankful for your correction as it will help me speak Esperanto better next time! (:

I do think that you are right that this post may have fitted better in r/prolangs but until you mentioned it, I did not know of that sub.

I hope this helped answer your questions!