I can't say how important it is to check your needles. A jewelers eye loupe gives you an up-close look. I prefer the ones with a light. Amazon has many to choose from.
You're looking for:
A burr is a hook on the end of the needle and it will cause a lot of skin trauma and bleeding during a procedure.
Check your needles, it only takes a few seconds and will save you time in the end.
To your PMU success,
PMU Artist & Needle Specialist
Inside Needle Knowledge, I.N.K.
This chart helps you pay attention to your hand speed, machine speed, and hand movements when using liners for a liner effect and shaders for a shaded effect.
It also shows how you can use:
A great go-to chart is just the beginning!