Hi
@ash0kgiri ,
Sorry for any confusion.
There's plenty of scope for personal variation with Spencerian, especially with regard to shading, so in the end you should follow your own instincts. However, having a good exemplar and attempting to reproduce it is the quick way forward if you ask me. May I ask which you are using?
I think the points I raised are all quite uncontroversial and related to the things which make Spencerian distinctive - for instance "semi-angular" refers to the way transitional turns are less rounded than in copperplate. (Or to be more technical they do not have a constant radius). Really homing in on the exemplar and copying it will help a lot more than my attempted explanations.
Regarding that specific point, perhaps it's easier to start with the end result. What you're aiming for is a lopsided shade, and the way to do it is by bearing down on the right hand tine of the nib more than the left. If all goes according to plan the inside (left) of the shade will follow a smooth curve curve, whilst the outside will swell. Equally smoothly! You'll see this a lot in old specimens, particularly Madarasz's. It allows you put more weight into the shade, lower down. So, the way it is done is with a slight clockwise twist of the pen, to splay that right tine. There's a real knack to it. If you use arm movement, which is to say writing from the shoulder, the action is in the wrist; if muscular movement (resting the forearm on the desk) it's in the fingers - but you still make the shape of the letter without back and forth finger movement. I might as well be speaking Klingon at this point, most likely.
Anyway, for ordinary Spencerian capitals you don't need to do this, but for Ornamental penmanship - and that's what your photo is - it's a fairly standard technique.
Good Spencerian videos are a bit thin on the ground, but as ever Schin is a reliable guide. There are a couple of videos of John DeCollibus who is very nice to watch, but he's a left hander using an oblique holder so it's a bit odd. Also have a look for Heather Held, Hoang and Jacob Ira Vijandre. If you watch a few videos you'll notice that everybody works differently, so the customary advice applies and if what your doing works well and feels right, it's right.
PM coming with the link to the package.
Andy