Gradient beginner

For this weeks Sunday homework assignment Nicole at Nicole Gets Nailed and I decided on doing a gradient.  I have such a hard time doing this and have tried most techniques.  I'm not really sure if this can classify as a gradient...but it's pretty!!!
I could REALLY use any suggestions or techniques that you guys use. I always end up with pieces of sponge attached to the nail or it gets too bumpy to smooth out with a top coat .

I used two coats of Revlon's 'Dreamer' for the entire nail. For the gradient I used Revlon's 'Metallic' . I liked the silver because it was easy to work with the sponge. I need as much help as I can get


Make sure you check out Nicole's at Nicole Gets Nailed