We have created many sets of Assembly and fitting instructions for Focus (a large DIY  retailer in the UK).

Here are a just a few examples.

Over the years we have produced many fitting instruction sheets for B&Q. Normally we are given either the actual product or the schematics and a little guidance on the assembly/fitting. We then work out the best way to show the user how to fit the components. The actual design and layout was determined by the B&Q corporate guidelines.