but I also didn’t know how to introduce people to the concept and characters and keep it brief

Oh. Show, don’t tell. Keep consistent with their character and give them situations to show how they would respond to clue us in.

If you do want to go full Brady Bunch though, feel free to get creative with placement and or take some inspiration comics and TV. Banners are a great tool to draw attention and add style, or you could even just go lower third and put your details about uploading there. So as to not busy the comic with text and give it a somewhat static background to stand against.

Also, thank you for being receptive. I actually really like seeing new artists. And wish you the best and will look for your next stuff.