While I'm busy blathering post after post...here's some helpful advice....
If you apply the same formatting to individual lines, it will actually put the formatting tags in for each line, which counts against your sig length. There is no need to do this.
For example, you applied the font and size properties to line 1, line 2, and line 3 individually. That means there is a [font][size] and [/font][/size] tag on each line, when all you needed was a font/size open tag at the beginning of the first line and the closing tags at the end of the last line.
Your last line, because of this in addition to the red text, was probably too long and got wrapped, making a 4th line.
Hope that helps.