Okay well I dyed my hair about 3 months and I dyed it dark dark red but now its fadded to a mediume reddy colur with a bit of brown (by the way my natural colour is light brown with almost a bit of dark dark sandy blond) but anyway I want to dye my hair my natural colour again and put lots of high lights in it but will I be able to get the colour I want with the colour I have?? / please help!

If you want to go back to your original hair color or lighter, you will need to strip the color from your hair, and then apply the desired color. You could make matters worse if you attempt to fix it yourself. You should consider letting a professional do it for you.