I’m using CC3d yellow silk PLA running at 220C nozzle and 60C bed. It’s actually pretty nice aside from some deformities so I figured I’d post it up for opinions. 
It’s a lucky “rockkitten” 
Start with the model. Get it uploaded in something like meshmixer (people may laugh, but I still like it) that can show you the actual triangles and check that something isn’t overhanging or folded under there, or that there isn’t some other poorly handled geometry; seriously I’ve bought some stl’s that I’d have been ashamed to put on sale if they were mine. Fix your errors, people!
After that is it just good old-fashioned unsupported overhang? Second pic looks to me like a couple of loops that were printed in thin air, and PLA as yet does not know how to fly, though it can do that Wile E. Coyote thing where it hangs in the air for a few seconds until it “realises” and gravity works again.
Lastly could be a deposit of “schmutz” from the nozzle…I’ve noticed even the shiny brand new flagship that is the K2 is still not immune from this…tiny particles of molten filament build up on your nozzle, until the weight gets to much and they are smeared onto your nice otherwise pristine surface. Even though it’s an all-singing, all dancing wonder machine, it still might be overextruding a tad; tell it who’s boss and knock your flow rate back by 5%.
So;
Check the model
Check for overhangs
Check the support
Check the nozzle.
Simples!