rust problem, need suggestions

[my first mustang]

just left the car wash, and discovered a rust spot smaller than the size of a dime. it's on the front left fender where it meets the bumper. i'd say about 3 inches back from the headlight. I'm wondering if this is something i can do myself, with sandpaper and a rust pen, or should I seek outside help on this. And, how much would it cost to have someone fix this for me?

 

[onlycodered]

Any chance you could post a picture?

 

[my first mustang]

here are a couple pics.. the rust spot is at the bottom of the fender where it meets the plastic bumper

 

[onlycodered]

Oh that's not bad at all. It'll be much less noticeable if you fix that yourself too. What I would recommend is that you take your front bumper off, then sand that spot down, see if you can prime it, then spray some paint on there and clear it.