So I need to prepare a PSD to print a 250 mm x 250 mm card. 300 dpi and CMYK. I am fairly new to this. This isn't my domain. I am just asked to do this.
Now the problem is, some of the source images are too small. Main image is just 800 px x 600 px, 72 dpi and 24 bit depth.
Should I re-sample the source images to 300 or not? Is there any other way? At this point, I feel that I should forget about getting the best quality but what can I do to achieve maximum possible quality?
How would the image look in the printed card if I enlarge it 5 times?