GT sketch trade

Hi what's "sketch trade" mean

um unfortunately for you I was your sketch trade person, tasha-chi!! I think Akira is really really cute because I love bookworms because I'm a bookworm and I wanted to do a nice sketch trade but instead it's this. I literally got so inspired when I read through his character sheet... but then I kind of ran out of time and real life stuff popped up and this is a sketch .... trade.... haha yea right
anyway I hope you like it !!

_{I want to draw Akira again one day actually guh but not when there's time constraints I feel so stressed I'm sorry it turned out like this
Not doing a timed sketch-trade again}