Hair dye question please?

I think since you've dyed your hair so many times now, you can't be sure what colour it's going to turn out - it's a bad idea to bleach to yellow and then put more colour over it by yourself when you've already dyed it so many times because it really could turn out any colour. I really think you should go to a salon and get a professional to do it for you. It will probably save you a lot of time/embarrment and that's really the only way you can be ured it will turn out right.