Nail Perfect Professional has few diffrent brushes for art, some with crystals and caps but it is not about that, The one which I mension above is best all over the world for the fines designs, as it is the smallest brush which is available in the market it is n 0000 not just 0 -(as 0 on is own is a big brush and you can't get as fine lines with it.) Small tip use your brush wet then it works better (paint go's smoother.) I like use my finger for mixing paint. Best to get goot quality highly pigmentet paints, as this hel is well. May have some time next week, will try to upload some video of how to hold and prepare brush for good aplication of finest lines. Will uload a close up for dital which you can get with Brush n 0000 on painted face like eyes, eyelashes, eyeshadows, lip blush, and all smallest detail. .Ps now you filling as in my draw was hundreds of diffrent brushes to. I like the Painting fineliner for it look as is nice and black and with daimonts, but ones again, daimonds dosn't give as the finest lines. So I stick to poor gray brush which dosn't look best but dose the job perfectly. xxx