This is what I've done so far

[PaulD]

Hi Please can you help.
I am not sure how to go bout fixing the marks on the floor next to the chair.



Thanks,
Paul

[Hannie]

Hi Paul,

What a cute kid, you've done a great job!

I would try and burn the obvious lighter spots on the floor or use a level adjustment layerwith hide all layer mask to darken the lighter areas where necessary. (white brush on black layer mask).

Hannie

[PaulD]

Thanks, Hannie