I'm quite happy with how he turned out. This is the first model that I've scratch built, and it was a lot of fun to do it. My plan is now to do this with the rest of the models in the kill team, leave no model unconverted! And I plan on trying to make them from my salvaged bits too, I know all ready that I need to use some new bits and I want to use them sparingly.
I gave the Apothecary a power sword mostly because for my kill team he for the most part will be leading the team, not to mention I love power swords, they just look so cool to me and I think is gives him a more badass knight feel. I also added a bit of plasticard to the left pauldron to give it a more MK III feel.
As for fluff, or "backstory" as some are calling it now. I'm thinking I want to make them a succor chapter of the Imperial Fists, the chapter tactic "Bolter Drill" is a really cool idea to me and I really love the Imperial Fist's fluff not to mention their amazing color scheme too. I also want to make my own chapter, mostly because I would like to have a force that can explore the different chapter tactics out there with out being peg holed into a certain chapter affiliation.
I'm not sure what color scheme I'm going to go with right now, I play Ultramarines and Blood Angels so I have blue and red power armor and want something that goes along with both so that I could either have them as a succor chapter or an allied contingence of another succor chapter. Two ideas I do have for color scheme are either a royal purple, with sky blue eyes and gold trim, kinda like the Soul Drinkers. Or a color scheme more like this, I really fell in love with the scheme when I saw one of winters SEO battle reports, if you haven't already checked him out, please do I think his battle reports are fun, well lit, and I think his army is very cool looking, so do it! Go check him out! I like the brighter blue its for sure, in my opinion, a lot more cheerful scheme than the Ultramarine's, I think they still somewhat match without matching too much.
Next step is to prime him up! And then work on his base. I was thinking about giving him a space hulk style, Zone Mortalis, or landing bay kind of a base, more on that to come.