Redraw 6 Roller Coaster SVGs

I have six roller-coaster silhouette designs in PNG format that need to be turned into crisp, scalable SVGs suitable for cutting medium-sized wall stencils (roughly 12–24 inches). The current files lose... (Budget: £20 - £250 GBP, Jobs: Adobe Illustrator, Graphic Design, Illustration, Illustrator, Photoshop, SVG, Vector Design, Vectorization)