From the signature guidelines.
The TOTAL number of lines in your signature may not exceed 12. All of the following count as a line: (1) a line of text, (2) a blank line, (3) an image of any kind on it's own line (such as photo, countdown, smilie, egg, etc), (4) any type of spacer such as a dashed line.
The most common item we find here are users with a long vertical list of their WDW trips. Instead of putting all these on separate lines, one on top of the other, it's suggested you put them on one horizontal line going across the page. Many users do this and differentiate the trips by using different colors, etc.
Try reducing the lines in your signature and then posting the ticker.