Forgive any presumption on my part (just an enthusiastic amateur), but you are wanting to do what an entire industry of graphic design and advertising strives to do and does very well.
At a cost!
Corel is what I use, but Illustrator and Apple Mac seem to be the norm in industry.
Throw in Acrobat, Quark and all sorts of expensive software and hundreds of hours learning to use these.
Serif offer a range of cheap and cheerful stuff, but everything depends on how much dressing up you have in mind.
You can stay with simple cheaper picture handling and presentation software but limited in scope.
This may be enough for what you wish to do, but its your products you are displaying and while you don't want a scruffy effect, you have to decide what level of presentation you can best use.