Whatever the situation might be, step up, accept the blame, and move on.
Here's a style tip that won't cost a dime! An average guy who wants to kick up his everyday style several notches needs realize that accepting responsibility, and, yes, sometimes blame, is a normal part of life. Or it should be. Too many people in public and private life build careers on failure to accept responsibility for their actions, habitually point the finger at someone else, and manage to weasel out of things whatever the situaiton happens to be. Know what I mean? American politics and public life are rife with this kind of thing, and I am willing to bet it also runs rampant within the private lives of many, many, many people.
So, here's the style tip for the day. If you are in the habit of always pointing the finger at others anytime a problem, difficult situation, or disappointment arises, make every effort to seize control of yourself and stop it now. That requires a certain degree of self-awareness, recognition, and acknowledgement of the problem. Learn to accept responsibility and/or culpability on those rare occasions when you do screw up, figure out a way around the situation, and move forward. No one likes a whiner who can't take responsibility in life, work, or relationships.