Check out these 12 hq pre made PSD mock-ups of a Square Trifold Brochure and...
Square Trifold Brochure Mock-up features: 12 pre made psd files; Advanced shadow and lights; Easy and fast editing via Smart-Objects; Changeable background via Smart-Objects; High resolution: 4600×2600px; Fully organized layers and folders; Photorealistic result; Help file;