Need advice on how to fix this paint problem please

[lovelyhead]

Basically I have made a mess of things. I noticed on our car that the previous owner had scraped the wing of the car and had made a repair. It was not a very smooth finish though and in my wisdom I tried to make it better! In the process of making it better I discovered that it was a very deep scratch that had been filled with touch up paint and I ended up having to sand it right down to get it smooth. How can I proceed from here. I can't really afford to take it in to be resprayed and would be happy with a decent diy repair.

 

[lovelyhead]

I know. I'm an idiot. I am usually quite competent at DIY but this time things went south. Hopefully there is a way to make it presentable.

 

[lovelyhead]

You'll be spraying that, whether it's from a rattle can DIY or a bodyshop is what you need to decide

Well I already have color matched spray paint so I could do that.