over 3 years her

Good day. There is one resource that I periodically go to to see for myself mockups on various topics. https://www.ls.graphics/free-mockups/brochure-mockup so your theme is here, and there are many to choose from. At the same time, they are free of charge, which is already very nice) But at the same time, if you are a good designer, you will not be able to correct them for your company as you need)