Beauticians, how to go from this to this? (hair pics included)?

For a less dramatic effect I'd recommend a shade of mohogany, for a brighter more dramatic effect and considering your going to Sally's *which is like the ebst place ever!!* i'd probably buy something close to just straight red, like bright crayola crayon red, not like red-head red. Since your hair is a darkish brown, it would add a tint so it would look about like that girls in the picture :)