I use Photopea. If you can get a decent silhouette you can do Image > Vectorize Bitmap to get a path and save it as an .SVG Blender can import an SVG; then you

I use Photopea. If you can get a decent silhouette you can do Image > Vectorize Bitmap to get a path and save it as an .SVG Blender can import an SVG; then you can clean up the curve if necessary.