Hi Michelle, usually to add pictures to the forum simple copy and paste should work, you may need to use a small image file size (low/medium resolution) to copy from.
Is the hull painted already?
It is certainly possible to paint a GRP hull – but usually a gel coat repair of the local area will be a simpler and better long term solution, it’s possible to colour match to produce a near invisible repair. Lots of good instruction on the web, start with East Coast Fibreglass https://www.ecfibreglasssupplies.co.uk/