Cropping & Printing

I have the perfect image to print. However, the image objects are smaller than I want. Before I print, I want to increase the size of these objects by zooming in closer or cropping before printing. How can I accomplish cropping an image to make the objects appear larger in the frame for printing? I'm not a printing expert, so I'm seeking feedback.

I must say I'm confused by your question. Don't you simply want to crop away some excess image around your subjects? Or are you hoping for something more tricky? (I can't think what)

It will help if you tell us what software you have.

I'd like to crop away excess image areas that I have no use for. At the same time, I'd like to increase the size of the smaller objects within the image so it looks larger on the final print. How is that?