This was the initial calibration and print for the printer.
A little tugboat.
The resolution of the print is to low, if it was on purpose' it's a good print, nice piece of hi end 3D printing equipment you got there, congrats.
I have a "budget" big sized clone of a Creality printer, it's called: Anet A8 Plus, got it as a gift from a friend, and till now I printed out some parts that friend ask me to design.
I recommend Fusion 360 from Autodesk, it's free as long as it is used for personal use, you can easily design 3D parts and export them as .stl files for Cura, there are lots of tutorial out there that teach both Fusion 360 and Cura. 3D design for printing it is fairly easy to get a glimpse on, no big deal, just learn the basics of technical drawing and then you apply some modification to your blueprint in Fusion 3D, you can print out anything you can imagine.
A friend of mine asked me to print the logo I designed for his crypto currency. Just import the .svg file you previously have vectorized in Illustrator or Inkscape, and extrude the logo as you need, but always be sure to configure the Cura settings right, just not to overlap the layers of the model or some other commune tuning parameter.
Happy printing, kind sire.