I repair all manner of tents; old canvas frame tents, modern 'synthetic' tents and almost anything in between. I can manage small bivvis up to large marquees - but there is a limit to just how big a tent I can manage. As a rule if it fits in the boot of your car I can usually manage - so just ask.
I can usually repair the fabric and replace guy points, eyelets and zips and so forth - so just ask....