Enter CATIA by double-clicking its icon on the desktop,By default, a empty “Product” file is created. But now, you don’t need this, just select “File/Close” on the menu
Select ‘Start/Shape/Generative Shape Design”on the menu bar
Uncheck “Enable Hybrid Design” and then click “ok” (An empty part is now created on “Generative Shape Design” workbench.) 
To create a Geometrical Set:-
? Select “Insert/ Geometrical Set” on the menu bar
? Type “Reference” as the name
? Click ok to complete
To Create an Extrude Surface:-
? Click “Extrude” icon
? Select “Sketch1” as profile, “yz plane” as direction
? Click “Reverse Direction”
? Push the mouse cursor onto Limit 1 and then drag it up to ~285mm
? Click ok to complete
To Apply a Texture material onto the surface:-
? Click “Apply Material” icon
? Select a Texture material, e.g. “B&W Tiling” on the list
? Click on the Extrude surface
? Click ok to complete
? To view the texture, click “Shading with material” icon
To replace the texture by a picture:-
? Double-click “B&W Tiling” on the tree
? Select the tab page “Rendering”
? Click on the sub-tab page “Texture”
? Select “Image” as type
? Click “…” icon to select a picture file
? Select the file “p51-right.jpg” in your project folder
? Click “Open”
? (Now, the projection method is not correct to show the picture on the surface)
? Select “Cubical Mapping”
? Deselect U,V repeat
? Flip U
? Click ok to complete 
To create another sketch:-
? Click “Sketch” icon, then select “zx plane”
? Draw a vertical line on the left (with one end touching x-axis)
? Click “Constraint” icon, then select the line
? Modify the length to 25.4mm (1inch)
? Click Exit to complete
To resize and relocate the reference picture:-
Click “Right View” icon (or click “y” on the compass)
Double-click “B&W Tiling” on the tree again
Select the tab page “Rendering”
Adjust the values “Scale U,V” and “Position U,V” until the scale 1-2 is nearly of the same height as Sketch.2
Keeping the Scale unchanged, adjust UV positions so that the peak point of the image lies on the origin
Click ok to complete
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