I am a few days late but the theme is Going on Holiday.
This is my interpretation.
I did palm trees on a two colour gradient base. I have done these before in a different colourway, I think I prefer the original (here).
Also I did NOT use nail polish, I used acrylic paint for the gradient and trees :) I put on a glitter coat over the top of the gradient however, and as you can see on the purple bit, it kind of did a shattered effect, I quite like that.