in summer I'm all for glitters based on clear powder, acid colors, matching my swimm suit... with some 3D on... and very long.
in autumn and spring I'm more for season colors, brown for fall and pastels for spring, with tiny amount of glitters... and encased nail art.
and in winter I go for more extreme things, bold colors, red, or dark, and 3Ds, nor flowers usually, but using all you can think of.