Entry for the 4th task - Final image and text (the steps used for the image are below):

Confronting Minerva

Proud, in her new pink dress, Dolores came into the Transfiguration Classroom ready to put Professor McGonagall in her right place, since she finally got rid of Dumbledore.

- Hello Professor, as you know, in my new position as Headmistress, from now on you will have to report to me, and to me only. I just came here to make sure that you understand it, my dear.

- Oh, hmmm, hi Dolores - said Minerva with the most unpleasant look that she could put on her face. - So, apart from chasing and torturing students you also have time to bother the Professors that are really willing to teach something useful to Hogwarts students?

- Careful with your tone Professor! - replied Dolores, adding a lovely pink to her cheeks. As you know your position as Deputy Headmistress means nothing now that I'm in charge and I have all the means to finish your career. I have to remind you, in case that you forgot, that the Ministry will support me since you're as we all know too "loyal" to Dumbledore, an enemy of the Minister and to the Ministry itself and, not for long, on the run.

Considering carefully the last clear instructions made by Dumbledore, Minerva turned red, took some breaths, and finally managed to control herself. - Oh, dear, you're so wrong. I'm loyal, indeed, but loyal to Hogwarts principles and to the students, so you don't have to worry at all. Well, I have to get ready to start my class, so why you don't you go have some quality time cleaning your lovely cat plates?

- Good answer, but not the right one Professor - said Dolores, focusing again on her task to tease Minerva, so she could get rid of her as well. Using her best tone of kindness she added - You have to be loyal to the Ministry and by that means to me, my dear. Dumbledore is no more, so, since you're so used to, you'll become my pawn. You always worked so well as Dumbledore's pawn… as many professors that will have to be replaced, so now….

That was more than enough to Minerva. Despite all her efforts she was red as a pepper with her wand on her hand, mentally asking for Dumbledore to forgive her. Torturing students, preventing their training for the upcoming war, saying bad things about Dumbledore and now this!! It was too much, so while Dolores was still enjoying herself with that disgusting smile on her face, Minerva pointed her wand to Dolores and, before she could take another breath to calm herself down, the spell came into her head and without having to say the words…there she was, a lovely white pawn. Oh, Minerva knew she was in trouble, but enjoying the moment as much as she could she only could think that the tine and even cute Dolores would be a nice replacement as a piece in the next Hogwarts Wizard Chess Tournament!

This are the steps that I used. The images are posted here in the original size (if you save them or open in a new link you will see it) but I reajusted the size just to make fit more images in this page. I used a total of 13 steps - considering the base 2).
base image 1 base image 2 cuting mask of base 2
color effect - desaturation color effect - tone adding images together (2 layers)
Cutting just to head and turning position adjustment of head with rubber adjustment of head with brush (neck)
adding plastic texture on the head adjusting brightness crop
adjusting cheeks with brush (taking out light) to final image