I think they are relatively easy to use. I've used some other full nail decals and they lasted a bit longer, but I enjoyed the designs on these better. I did not have any luck adding a top coat, it made the sides lift. Make sure you have a clean nail, some cuticle scissors (if you have small fingers) and a good file to remove excess. They are fun - especially if you want the nail art look without making the mess to hand paint or stamp.
this one has a pearl finish and is bright in color. paired with the right base color it really jumps off the nail. for those that aren't shattered-out yet, may be wanting this one for a different color option. this photo is all three blue shatters, white shatter, and silver shatter over OPI Mermaids Tears.
rally pretty pink and red shatter. at first take it is kind of a weird combination, but it works together. rally pretty pink is a semi-insane looking duo-chrome and different from most others I have ever seen/used. the red shatter has a pearl finish which is really neat. totally worth it.
I swatched each of these polishes individually and absolutely loved them. My favorites are Skull and glossbones, Mermaids tears, Planks a lot, and Sparrow me the drama. Honestly it is hard to dislike any of them, though. If you like pastels then this is THE collection for you. I LOVE OPI brushes and formula - 3 coats and little to no clean-up. fabulous. Photo attached of Stranger Tides - a soft, murky olive green