Wipe down the oil filter where it joins to the engine with some kitchen paper towel
Run engine for 5 minutes and check the joint again for oil
Try to fold the paper into a strap slide it over the oil filter then pull tight then remove the pressure and slide it out
You are trying to get a blotting paper marking
If it only happened after you did the oil change then the oil filter too tight - too loose or even wrong filter are prime suspects
One of those mirrors an a stick will be handy
Some times I use spray on foot powder on the joint to watch for wet spots seeping out .