I am sick and tired of getting photos that turn out just slightly blurry. I can't seem to figure out why this is or how to fix it. I like to shoot at events, indoors and outdoors, action shots and candid portraits. Mostly "in the moment" stuff.

My biggest guess at the problem would be because I use the 50mm f/1.8 STM. I love the low aperture bokeh, but I'm afraid that my photos might just be a touch out of focus. With such a shallow dof, it gets blurry with even a small focus error. When shooting in the moment, it's can be a hit or miss. 

Another guess might be the glass. The lens is nothing special so I wouldn't expect an incredible image, but a sharp image should be possible with most lenses.

I don't think it is motion blur cause I shoot about 1/250 or faster. Back to my hunch about the AF, I sometimes shoot with auto focus point, instead of center focus point. I just talked to another photographer who told me that's a sin. I can switch to center focus point, but that would require all my photos have the subject in the center of the viewfinder. I'd bet there's a way around this but I am not currently aware of it. And would that even fix my problem? 

I'd attach two photos as an example, but I think SE compresses the photos so it defeats the purpose, so I'll add link to the original. At a glance, they look fine, but a closer look shows that the subject is not as sharp as possible. I'd love to hear any advice you have. 

<https://flic.kr/p/NsLQ5k>

<https://flic.kr/p/MjRyMc>