Saturation and Brightness in regards to pony OCs

I've been in quite the creative slump recently. So to help force myself through it, I thought I might provide something helpful (I hope) to the fandom. As explained in the top paragraph, I've seen quite a few people ask about OC design. And after having seen a few... well less the spectacular designs, I felt like I could provide some assistance.
If people like this, I might make some more about OC design, and what you should avoid. (If you even think that having an image of videogame controller as a cutie mark I will sob quietly to myself. I swear every second badly done OC has that as their cutie mark. /rant)

Anyway cheers.
(Something I've done that doesn't use other people's vectors? WTF is this )

*I've always found the whole OC thing as a bit, well... If you understand restraint and modesty, you can come up with some cool designs. However, you can overstep the mark very easily. eg. "this is my OC, he's an Alicorn and is responsible for for everything that has ever happened in all of history. He is also married to Twilight but is in an open relationship with Rainbow Dash... etc etc etc. ORIGINAL CHARACTER DONUT STEEL."

Let me just kill myself before you continue.

Anyway, Cheers (again)

Edit - Added my devaintart address in the bottom right, and changed the wording of the explanations slightly.