Bleaching my hair Today? {advice please}?

HI. Wow love your adventure chic..ok the jerome russell bleach will bleach up but prob is you have dark at roots and actually 3 different colours at best this is colour correction, but with what you have bought i think you can do this however apply the bleach to root area (only) first ..after about 20 minutes pull rst bleach mixture thru rest of hair, now put a plastic bag over your hair and time out by another 10-15 min ..judge this by looking at the removal colour you really want all of it a lemon yellow..ok? when it's there rinse the stuff off and your head gunna be tender...the joys of beauty! now condition because this hair is very porous now and will grab colour...after dry the hair and apply a ash or purpleish tone to get the brass away. Now make sure you have enough to cover if this may involve 2 boxes if you doing otc stuff...your should now have a fresh pallete of one colour to colour pink. let me know how you do and best of luck chic