Create a project in photoshop

Project Setup

Name: Business-Card-Front - Your Name

Width: 3.25 Inches

Height: 1.75 Inches

Resolution: 300 Pixels/Inch

Color Mode: CMYK Color 8bit

Background Contents: White

Now press OK to create the document.

Create Safe, Trim and Boundary Guidelines

​Press Command-R or go to View > Rulers to show Rulers. Next, go to View and check Snap. Finally, go to View > Snap To and check Guides, Layers and Document Bounds.

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Make sure the following options are enabled.

Guidelines

Let's begin with the Safe Area guidelines, within which all important images and text should be kept. Simply click on the Ruler and Drag a guideline to all four sides of the document. It should snap into position easily.

Canvas Size

Now let's increase the canvas size to 3.5 x 2 inches. Go to Image > Canvas Size and set the Width: 3.5 inches followed by Height: 2 inches. Press OK.

Trim Guidelines

Next, we will create the Trim guidelines. Anything beyond this guideline will be trimmed away after printing. Now click on the Ruler and Drag a guideline to all four sides of the document.

Canvas Size

Increase the canvas size one last time. Go to Image > Canvas Size and set Width: 3.75 inches followed by Height: 2.25 inches. Press OK to apply the changes.

Boundary Guidelines

Create the Boundary guidelines. Although not necessary, having this guideline will definitely help when aligning objects to the edge. Simply click on the Ruler and Drag a guideline to all four sides of the document.

Lock Guides

Now that it's done, let's go ahead and lock the guidelines in their current position. Go to View and check Lock Guides.