How to make new posters? I'm going to use ps to make a 4-poster for community recruitment. What is the specific numerical setting?

How to do the new poster of animation club? If it is made of PS, directly select A 1, A2, A3 (it's easy to print, but it can also be done on a 1500mmX2000mm display panel that exceeds the standard), and the resolution is set to 300pixel. If the size of the picture is used, the jpg format should be around 1000 pixels X2000 pixels, and the bigger the picture, the clearer it is. (The picture of 1920X 1080 can be used as A3 poster, and the size of A3 poster itself is 496 1X3508). 1080X768 is the size of ordinary computer wallpaper, and it should not be blurred if the length is expanded by 5 times. It's no use making posters with too flashy pictures, and the words can't be read clearly. Generally, people are taken out of the picture as elements and arranged in a relatively simple redesigned background to highlight the feeling that the animation club has recruited us here. In the first year of our club, the colors were inserted around the circle, and the middle was left blank, so the picture size was not high. In the second year, I drew my own poster, digital, and directly drew A2 size. In the third year, it was a blank sheet of paper with a QB face in the middle, which read "sign a contract with me". The fourth year is the digital painting of the predecessors, with the size A2. ) I'm going to use ps to make a 4-poster for community recruitment. What is the specific numerical setting? You must make sure that your poster is printed, printed or photographed. Also make it clear whether it is senior three or senior four. Newly created document, length and width: 540*390mm (quad) or 590*440 (quad) Resolution: 300 (print) 200-450 (print) 72 (photo) In addition, it should be noted that quad specifications and high resolution will generate large documents, and your machine must be able to run. Color: How is CMYK mode more fashionable to design new posters in the student union office? For example, you can use graffiti to do pattern design, and refer to the design of posters such as mobile phone dynamic zone, which is more suitable for the tastes of young relatives. . .