How to create your own Patchwork on Photoshop:
1st step: - Open a square RGB with 150 dpi ( on this example 60 cm x 60cm as the 20cm square size is visually engaging) See below :
2nd step : - Create 4 guides to place the 9 square designs. Go to View, New guide … Choose orientation horizontal, position : 20 cm.
Repeat with horizontal 40cm, vertical 20cm, vertical 40cm. You should have 9 perfect 20cm squares :
3rd step : - Place the 9 different squares into their different slots. Open the square design in Photoshop, with the tool Move (v), drag the design into the patchwork file. It will create a new layer that you can rename. Open the Properties window by going to View, Properties. It will show the size of your design in the patchwork. Change the X to 20cm, Click on the link pixel width and height if it isn’t active. It will change H to 20 cm as well. Place the design on the first slot.
Repeat the same action for the 9 different designs. Your patchwork should look like this.
4th step : - Verify that the patchwork is correctly aligned. Mask the guide by going to View, Show, Guides… ( shortcut : Ctrl+; ) and click it to deactivate. The blue lines should disappear. Adjust the designs if need.
5th step - Go to Layer, Flatten image and your design is ready. Do remember to save your work regularly.