Easy

Alone in his room in the middle of the night Xander looked at himself in the mirror. Naked as the day he was born. He wasnt exactly thrilled by what he saw. He was pretty much the definition of average.

But he didnt have to be.

He looked at the magic marker sitting on the dresser by his mirror. The key to changing himself from ordinary to extraordinary.

There was the slight problem of not knowing the rules of the magic marker. Which did give Xander some modicum of pause. But that was easily overwhelmed by the current thoughts going threw his head.

He might not know the rules but there had to be a basic level of use that no one could fuck up. Easy mode. And he was going to find it.

The first thing he had figured out was not to change things too much. Not really a rule as just good sense. People would notice if he was suddenly six inches taller and had a hundred pounds more muscle.

But if he started small...

So he was five feet, ten inches tall...

Picking up the magic marker Xander raised his arm up and started writing on his torso. SIX FEET, TWO THIRDS OF AN INCH.

Xander capped the magic marker to be safe. Then he looked down at the ink on his skin. He stared and held his breath as the magic started. Like ink in water the marker ink dispersed into his flesh.

He checked the mirror.

He was taller. It was noticable. But he had a plan for that. He just had to give up slouching and slumping, sit up straight, good posture and all that would make everyone think he had been this tall for awhile. Plus he was still a growing boy, it was still possible for him to have a growth spurt.

Xander snerked, "Growth spurt."

He did look a bit thinner though. The magic taking some fat from his body to make the height change? Or just the difference in height while his weight remained the same. Or was it- Xander shuddered as he realized he was going to have to write shit down and do math to find out how this worked.

"Dammit! Now wheres the dang scale?" Xanser griped as he looked around his messy room.