Nail Testing

I've been testing on fake nails with colours and ideas. These ones shown below have had one coat of a colour then a second coat using a crackle nail varnish on top to test out the contrast of the colours.
I think this would be a good nail design for the catwalk look due to the quick application but the dramatic effect which the crackle makes against the colours.

Just plain colours, matt and shimmery, which I could use on the nails - products from Missguided, W7, Barry M and MUA.