Photoshop Tile Material Assembly

I have a set of 12 high-resolution tile photographs that I need combined into a single material map for use in 3D renders. The final texture should show the tiles laid out horizontally in a staggered pattern,... (Budget: $10 - $20 USD, Jobs: 3D Modelling, 3D Rendering, Adobe Photoshop, Digital Art, Graphic Design, Image Processing, Photoshop, Visual Design)