When designing with PS, as long as you select A4 paper inside, it will automatically adjust the size and resolution for you. Printing needs to be changed to printing color.

Pay attention to the bleeding part when designing, and try not to have important things such as 3mm characters when designing. If materials are used, it is good to use high-precision materials. You can download it from www.sccnn.com and other design stations.

When printing, it should be noted that on color inkjet printers, it may be necessary to convert colors to CMYK. The effect of not rotating may be discounted; Preview when printing, and then select the Zoom to Fit option.