First of all, welcome, Trevor, to Elysiun!
To the untrained eye this scene might look rather simple, but it’s what you’ve done with the box that’s quite appreciative: while many modelers would have been content to create a box and flaps using minimal geometry, you’ve gone the extra step and introduced minor but vital imperfections in the sides/flaps of the box, thereby making it much more believable and special
The hint of corrugation is also a very nice touch!
If revising the background becomes too much of a task or goes nowhere, perhaps a simpler background, one that doesn’t compete as much with the primary subject, might work, or even something like just a black background.
Texturing issues can be overcome easily enough in time. Everyone has artistic potential, so just stick with it Your CAD experience may give you a much stronger foundation than you realize with Blender, so I’m sure it will come in very handy for you at some point.
The box as it is creates a nice little sense of mystery… what’s in it, or what was in it. A good/slightly connotative title (e.g. “Special Delivery” or “The Gift”) can also give a little extra something to an image, ever so quietly suggesting the viewer imagine things a certain way or perhaps wonder a little bit more about what the image could be portraying.
In any event, I hope to see more of your work and encourage you to do more with Blender and share your progress with the community here