Remove your motorcycle oil filter cap, place a tray under the bike and remove the sump plug. Remove the appropriate bolt, which is the biggest one on the sump, usually on the bottom or on the side.
Once the oil is drained, remove the filter with a wrench.
Replace the sump plug; tighten to the correct torque setting as recommended in the owner's manual before spinning on a new filter. Smear the rubber filter gasket in clean oil before tightening by hand. Nip it up half a turn with the filter wrench.
Pour new oil. You can restart the bike after and check for leaks. After that, stop the engine for five minutes and check the level again.