stripped

Hi everyone Recently sanded back our pine floorboards and got a beautiful look, however once we applied Osmo Polyx Raw it all went a bit wrong - it left a white sheen. Have since read you should ignore their advice and not just leave it but buff it and remove excess to avoid this happening -...

Title says it all, I've got a damaged/stripped screw head in my kitchen sink tap....bad times. See photo attached. I've tried different screwdrivers with a bit of force but that thing isn't coming out and I don't want to make it worse. How would you approach this horrible task. I've...