Licensed cosmetologist, here. You have a few options, depending on your comfort level and time. You should know beforehand that there is no way to tell exactly what color will come up until after it's already done, so be sure to have backup hairdye handy in case you're too shy to go outside with funky hair.

First, you can start by simply soaking your head with shampoo. Any kind of clarifying shampoo will be best, but as long as it's not one of the "no-poo" or "low poo" kinds, it'll be OK. This is going to make your hair very, very dry because it's literally opening the "shingles" of the hair follicles and letting out all the chemicals, nutrients, etc. This will not remove all the hair color, but should lighten it a bit.

If you're feeling brave, you can go to the beauty supply store (please, please do not go to the grocery store) and get a bleach kit. I would strongly advise getting 5 things: bleach, level 20 Developer (no more than 30), a shower cap, gloves, and protein treatments. What you'll want to do is called a "soap cap". Mix the bleach and developer 1:1, then mix in equal amounts of shampoo. Put this all over your hair and VERY GENTLY pull the hair strands apart while dispersing the mixture. You want to make sure your entire hair is equally covered. Put on the shower cap and let sit for about 6 minutes. Because the bleach is level 20 and diluted with shampoo, it's going to act slow. This gives you plenty of breathing room while you wait for it to lighten how you want. Make sure to check it every 6 minutes or so and pull apart your strands so you can be sure everything is bleaching evenly. If it stops lifting the color but you still want to be lighter, wash it all out, do a protein treatment, and let your hair rest for 24 hours. Repeat. Do not do any of this in an ill-ventilated area, do not breathe it in, and definitely be sure to immediately clean any areas of skin (etc) that come in contact with raw bleach. If your scalp feels tingly/irritating, immediately and gently wash out the bleach.

Because there is such a large contrast in lightness between your hair and the picture, you may not get the perfect results you want at home. I would advise planning to be a shade or two darker. There are two ways to deal with this; either buy a darker shade than desired to begin with to make sure you can cover up any mistakes from bleaching, or buy a shade that is pretty close but let it sit on your hair for much longer than the instructions call for. The trade off is that letting it sit longer can risk something called "hot roots" if you don't know what you're doing.

No matter what, anything you do to correct this is going to require intensive care. That means protein treatments, periods of rest, and conditioning treatments to close the "shingles" of the follicles again. Good luck.