Rust removal on sills (Part 1)

Managed to get Oliver in the garage for this week, and have a list of what I would like to get done in that time. Today, I have removed the front right mudflap to get access to some rust on the sills,cleaned it with some sanding paper. Tomorrow I am hoping on getting the rust clean and ready to be filled and then paint it with some Hammerite.To finish of I'll get Halfords to mix me a spray can so I can paint the repaired area. Also I will get some photos of how I repaired it tomorrow.