Final Poster 

We chose this design as our final poster because the line art illustration and the blur gradient effect on the background are both considered a trend in 2021. And we can see it a lot in the posters nowadays.  
The serif typography that was used in the poster is the New York font. The New York font is part of the 2021 trend. We can see it a lot in the posters nowadays. So that is why we used it on this poster.
The warm comforting color shades were used in the poster because the Human tone colors have suited the poster and our topic while being one of the trends in 2021.