I’m no graphic artist, but the engineer/physicist in me loves designing things like starships. Here is Pegasus from the novelette I wrote last summer (that I’m still trying to find a publisher for). The starship was designed and rendered in Autodesk Inventor. The nominal outer diameter is 300 metres.
Background image: Firestorm of Star Birth Seen in a Local Galaxy [Credit: NASA/ESA and The Hubble Heritage Team (AURA/STScI)].