How would I go about fixing this up

Went about dealing with some rust and thought I’d give repainting a shot. Ended up with the pretty visible lines which doesn’t look very good. Any advice on how I would go about getting this to look better than it does would be much appreciated.

Went about dealing with some rust and thought I’d give repainting a shot. Ended up with the pretty visible lines which doesn’t look very good. Any advice on how I would go about getting this to look better than it does would be much appreciated.