Decide what kind of catalogue you want to create. Will this be a consumer catalogue or a B2B (business to business) catalogue? How many products do you want per page? 
 
Will the catalogue contain the full product range for sale, highlighted products, or limited category range of products? How many catalogues will you need to print and how many times a year? Attention to detail is must.
 
Images, fonts, paper type, and binding all play their role in creating the right image for your catalogue.