Dear customer: to be very honestly the first picture the customer even didnot even the nail surface well ,so easy to fall down,the second picture:the customer even didnot know how to apply correctly the gel polish ,should be paint thin layer once curing 30 seconds ,apply twice and curing 30 secs, in this much thicker way nothing can be dried and stay for long time.about the brush:mostly the brush all in big quantity and same price ,how could be different:we want long term business ,why only want save $0.005 per piece in just a brush?