Possible Clues:

• Endlessly cheer Ann, possibly producing boost
• Boost chance after gaining two points, but not 100
• Add to the value of
• To improve, guys risk losing their heads
• Option in a photo editing app
• Raise each nine, not one inappropriately
• Improve quality (of item)
• There are two points he can possibly raise
• Improve, increase the attractiveness of
• Elevate