To be honest, i try to not give shit to people for their style unless it looks atrocious as sin. You know, the usual tumblr style with red noses, exaggerated body defects, use of saturation and pastel colors to the extreme and the like. But when it comes to evaluate a drawing i remember what someone told me a long time ago. A drawing with good composition and proportions might be plain, but it will be aesthetically pleasing. A drawing with skewed proportions and lots of details is just a polished turd.
When it comes to ocs, i'm not one to judge too harshly since i also fall into the autistic oc category as well. And we are here to judge art so unless they got the usual picture with their oc blurbs, let's refrain from that.