That tiled sprite effect is lovely, very creative, and you even got some cos in there!
Me too, there are so many interesting things I haven’t tried. At one point I said to myself I will learn about a new way of doing something each week but I didn’t do it.
As for the svg path, it’s in the wiki, but the basics are you screenshot your scene/preview, create a blank document in Inkscape the same size as your game with units changed to pixels, paste your screenshot in, resizing if necessary and then make a new layer and draw your path with the pen tool, using your screenshot as a guide of where to draw. Save it as an optimised svg, open in notepad and copy and paste the co-ordinate code into your GD event.