@sharllp, centering an image or text on an item can definitely be tricky on the iEngrave since it doesn’t have a built‑in camera, but there are plenty of reliable workarounds.
For single items—like a leather hat patch—I measure the blank and create a matching template on my canvas. Before engraving the real piece, I place cardstock on the honeycomb and run a light cut or score to outline that template. Without moving anything, I place the leather patch directly on top of the scored outline securing it with some magnets and proceed with the engraving. This keeps everything perfectly aligned.
For multiple items, such as keychains, you’ll want to create a jig so each piece sits in the exact same position every time.
A great example for your reference on how to create a jig is from @skyicreations’s tutorial below hope it helps you and get some ideas.