LadyMonica4u

I'm new at paint.net and i've looked through the forum for a solution but i couldnt find any that worked The white border only shows up when i color in a part of the picture, not when its all white and black. I've tried the feather tool because it was suggested in another forum topic, but it didn't work. It never happened before when i made my other pictures, it just randomly started! Please help It's bugging the bloody potato out of me .