This design was actually quite easy and quick. I didn't have very much time to do my nails, but I had just enough time to do them.
I used three different shades of blue and a white polish for this. Start by painting your nails in the darkest blue colour of the three.
For the denim design you can just use the brush from the nail polish bottle. Wipe the brush on the edge of the bottle, and then wipe all the excess polish on a paper. Now there's only a little bit of polish left, which you use to paint lightly over your base. Repeat this a few times with all colours, until you're satisfied with the result.
Use a small brush to add the stitches. Finally add a matte top coat and you're done!
See you next time!