Hi all, about a week ago my roots became too much and I finally caved and bleached them myself (bad I know) somehow I’ve managed to lift the roots very much to an almost white colour with the bleach and white toner and the rest of my hair looks very yellow in comparison, any advice on how I can try to blend the two areas together? I’ve bought a bleach London champagne toner and was wondering if I applied to my roots first then dragged down the lengths would this help? Photos attached for reference are the colour of my hair before with my roots and what I managed to create with the bleach 
any advice much appreciated!