First, let me welcome you aboard the Challenge Jasper - it's wonderful to have you with us.
I think many of us (myself definitely included) can more than sympathize with the feeling of inertia from flitting around from project to project, slowly chipping away at the whole, but feeling like you're getting little done. Nonetheless, you've done a fabulous job with these 'week long' models.
I particularly like your shading (do you use a dip method?) and really appreciate the addition of the unit and rank patches (freehand?). It does such a nice job in finishing the models. I too like working on the Artizan range, as they generally have such distinct folds and planes to their sculpts, which really aids in their painting. They also have a lovely, reassuring heft to them, which really means nothing but appeals to my weird, deep-seated 'heavy is good' sensibilities.
You've really done them justice here, Jasper. I'm going to add a few more points for the shoulder markings and rank chevrons to tip you up to 28 points. Wonderful work! Keep up the steam, as I'm sure I'm not alone in wishing to see more of your work.