Magento extension customisation - canvas fabric.js

I have a Magento extension - productsdesignercanvas that needs some customisation. Preference will be given to freelancers who have some experience of this extension. 1) Remove requirement for overlay image in design area/design colours. 2) Allow svg for background image and color images 3) Exported SVG file should include the background as SVG elements, instead of as an embedded image (which won't currently load in Illustrator.) The [login to view URL] or [login to view URL] methods should parse SVG into objects that will be added to the canvas. Should take no longer than 1 day and budget is fixed at £70.