Hello,
My name is Magda Flores, I'm a Graphic Designer and I'm quite skilled with Photoshop. In the description says the project is about 46 pictures, to smooth and remove imperfections in the model skin, according to my experience I'd say depending on the degree of retouche, it takes 1h for each picture. Keeping it real, and adding some time for ultimate re-check of each picture (as the main aim is to deliver a natural look) this would take me 3 days. Because of this, 20$ (15$ since 5$ belongs to the freelancer site) is an incredible cheap price, but since this matches your offer, I'll take it as it is.
If you have any questions, or you have some more details about the project, please do not hesitate in writing me back, I usually answer back within 1 hour.
Thank you in advance for your time,
Magda Flores.-