Add logo to photo of clothing

I’m looking for someone very experienced in using photo shop or similar, to add a logo to the rear of 3 different pyjama photos. They are drop seat pyjamas, so there is an oblong flap at the rear that can be unbuttoned. I need the logo adding to this removable flap.

As the logo is in burgundy red & text is in black, on a white background. It makes more sense if each of the pyjama flaps at the rear is white.

I need a really professional job, so if you think you’ll just ‘ wing it ‘, don’t put yourself forward.

1) Black white and grey blocks of colour pyjamas
The oblong flap at the rear of these pyjamas is black. So needs to be made white.
As the buttons on the pyjama flap is white, they need to be made black, with white x in the centre of each button (which signifies white thread).

The logo needs to sit in the white flap area which means there will be more white area showing on left side of the logo/flap, due to photo being more sq shape, than the oblong shape of the pyjama flap. In order for it to look natural and authentic. The vertical skin area that shows on the right of pyjama flap, should remain.

2) Black & Pink coloured pyjamas
The oblong flap at the rear of these pyjamas is black. So needs to be made white.
As the buttons on the pyjamas are white, they need to be made black, with white x in the centre of each button (which signifies white thread).

The logo needs to sit in the white flap area which means there will be more white area showing on left side of the logo/flap, due to photo being more sq shape, than the oblong shape of the pyjama flap. In order for it to look natural and authentic. The vertical skin area that shows on the right of pyjama flap, should remain.

3) Red colour pyjamas
The oblong flap at the rear of these pyjamas is red colour.
So needs to be made white.
As the buttons around the pyjama flap are white, they need to be made black, with white x in the centre of each button (which signifies white thread).

The logo needs to sit in the white flap area which means there will be more white area showing on left side of the logo/flap, due to logo photo being more sq shape, than the oblong shape of the pyjama flap. In order for it to look natural and authentic. The vertical skin area that shows on the right of pyjama flap, should remain.

See photos of pyjamas attached. These are actual size of photos we will use in marketing, so shouldn’t be altered. Logo file will be provided to the selected seller. The text on the logo needs to be legible (readable).

I expect this done within 24 hours of being selected.

I’m offering £15 for this job. It's a simple job for an experienced photo shop dev. If you quote more don’t expect a reply.
Thanks