Small chips in paintwork

[BenJM]

Hello,

My car has three small chips in the paint from where I accidentally nudged a fence when parking. The fence took the white paint off so it's down to the plastic of the bumper.

These are bigger than stone chips but still smaller than a fingernail in size.

I was thinking about using chipex to try to restore these.

I was wondering if anyone would have any advice on performing a repair like this from any previous experience.

They aren't too deep however I think multiple coats of chipex might be needed.

Any further advice will be much appreciated.

Thanks