I’ll just add a few notes and their sources to help you recreating them.
1) A non conventional Christmas tree: it’s a black french manicure and an accent nail with a black, sinuous tree drawn with a permanent ink marker, as the blogger has done.
If you have a black french pen, that would be the perfection!
The look is refined with a white speckled effect top coat and a silver star on the top of the tree. Any white glitter top coat will be fine and the star, like these ones I own, should be placed when the “special effect” nail lacquer is still wet. It’s snowing!
2) This idea from Pshiiit.com is simply cute: azure nail polish with white dots and a little snowman on the accent nail. The nail polish she used reminds me of the old Eyeko Rain Polish, any pale blue is fine.
This manicure combines a neutral base and Christmassy tones (red, green and gold). The glitters have been applied starting from the base of the nail. You could use a sponge to apply the sparkly top coat in order to build the glitter layer with a nice gradient effect while avoiding excess nail polish.
When everything is dry, seal it with top coat to smooth the glitters.
To realized a manicure similar to the fourth picture, start with entire white-painted nails, when they are completely dry, apply some scotch tapes or toes french manicure guides, like the Nailene Perfect tips and toes as they are straight, in order to form some stripes.
You decide how many or how large they should be. Apply a red nail polish of your choice, plain or glittery. In the picture, the nail polish featured is Milani “Red Sparkle”. When you have covered enough the empty spaces and the lacquer is still wet, remove quickly the tapes and wait till everything has dried up. Finish off by sealing everything with a top coat to smooth the result and even the surface.
I’m quite in a hurry and I’m thinking about using a foil nail polish like Avon “Spacey Silver” or Lillalab “Bronze 53”.