The methods of making food festival advertisements with photoshopcs5 are as follows:

1. Open ps software and create a new white background file with appropriate size;

2. Set the file color mode and resolution according to unnecessary requirements. The color mode for screen form is RGB with a resolution of 72, and the printing color mode is cmyk with a resolution of 311;

3. Open the food festival picture, drag it into the background file, and press ctrl+t to adjust the size and position;

4. Click on the text tool, type the promotional text, rasterize the text, and add the text effect to finish.