Sometimes even if the tattoo is inked with great care and is done using  the best equipments, mishaps occur. One of the tattoo disasters is  tattoo blowout. This generally happens when the needle pierces deep  inside the skin causing it to spread in the tissue of the capillaries.  This blurs the main lines of the design.
Mostly such cases occur  when the artist is too heavy handed or the needle goes slanted in the  skin. The chances of tattoo blowout are generally more on the fatty  areas or sensitive areas. So decide a proper body spot for the tattoo. Consult your tattoo artist if such incident happens with you.
