Hey all me again!

Looking for some tips, i have removed my clutch cover to finally try and sort out a small oil leak and replace the gasket however i have noticed a few small chips on the engine side as well as bits of old gasket truelly stuck on, does anyone have any tips for removing old tough gaskets? and regarding the small chips could i get away with adding some instant gasket as well as the paper one do you think?

Cheers!