Wherever you go to hire someone to make an SVG, you may want to clearly state that you want someone with videoscribe experience, because SVGs need to be prepared a certain way for the best results.
1) You could try ANIMOLE (link at bottom of this page) to see if anyone there offers individual images. 2) You MIGHT find (Google search for example) some free- to-use images online somewhere but be aware of licensing rules. 3) You could try the various freelancing sites like upwork.com or social art sites like deviantart.com (you'll get a lot of unqualified applicants on deviantart but you might get lucky and find someone who can do it). 4) there might be an adobe illustrator forum or an inkscape forum where you could post an ad. 5) Or you could draw one yourself using inkscape (use version 0.48, free at inkscape.org) but again, SVGs need to be made and saved a certain way to work well in videoscribe.