A small brush would help solve this problem. Nail art pen: You need a steady hand for this, but the pen is very easy to use, and memories of my GCSE art skills came flooding back as I happily ...

which range from 5mm to 20mm in width), nail polish markers (the Saviland Nail Art Pens on Amazon come highly rated in a ton of shades), or a mix of the two. The trick to nailing the design is to ...