Unfortunately DSM is issuing a version 6 (V6) which has some reduced features such as being able to export 2D files as .ORF. So I prefer V5, but that is no longer available and may have its activation jerked. We shall see. For decal printing, my art work work is just great, but not happy with the material I am trying. I use PHOTOSHOP. I did use DSM to design some graphics that I printed on my Cameo (Cricut like) machine for cutting lettering from thin adhesive vinyl or as stencils.
DSM can import image files as a background. I did this with projects as the hopper cars, duce n half, jeep etc where I had 2D drawings. As this is a background, it's useful for scaling and arranging the 3D on top of it.
For the fluid White pass script logos I traced the .jpeg image from a photo and exported as a 2D design file to the Cameo and filled it in and exported as a .jpeg of the appropriate color for a decal.
DSM allows a very size accurate creation and a re size to the nearest percent. However as to 3D printing, the slicer (Chitubox) allows independent accurate sizing to dimensions in all three axis.
Tom