Well, it's a good start. I've often considered trying to make a LP video but have just never gotten around to learning to use the recording software, so appreciate those who take the time to do so.
First note, your voice is fine, has a good timbre, and clear pronunciation. I'd suggest more commentary, not less.
Suggestions, assuming you're making this primarily for newer players, but not inexperienced:
Settings - Keep it simple, normal or challenging difficulty, medium or smaller world, and default settings for everything else. Though I play on dense/epic, that can lead to a short game. Which might be fun to watch too, come to think of it.
Custom faction and Sovereign - I keep tweaking the ones I'm using based on whatever changes the latest build brings, so far this is my hands down favorite.
Race: Altar - Henchmen, XP bonus, the Rush ability, nothing but goodness. They remind me of the Grigori from FFH.
Traits: Enchanters, Lucky, Master Scouts, Quick, Rebels - I'd probably take Lucky just for the dodge bonus, Enchanters and Scouts are two of the strongest traits available, and Quick synergises with the Sovereign's Tactician. Rebels are because I never worry about Unrest, easy weakness to work around, especially with Henchmen. I do plan to try the No Ranged weakness next game, because my last few games I find myself not building archers.
Sovereign: General, Air Apprentice, Earth Apprentice, Brilliant, Tactician, Clumsy, Procipinee's Crown, War Staff - Air and Earth give you a selection of great buffs as well as the life saving Tremor and Tornado, General and Brilliant mesh perfectly with the Altar blood, as Tactician does with Lucky and Rush. Old what's her name's Crown lets you take upkeep free advantage of the great hero enchantments, particularly Tutelage and Evade. Choose the Mage path, with Knowledge as the first skill, followed by Air II for Tutelage, followed by the XP line, then nothing but Air until it's maxed and you can Tornado your worries away. Fit Earth II for Tremor in there if needed. Steal or buy Fire then work the Evoker line. Sure, it's cheesy, but it works quite well, and with XP being like hen's teeth, it's sure to get you, and a hero or two to cover your missing schools, a relatively quick rise through the early ranks.
Other thoughts: I enjoy LP vids, especially those that encourage participation from fellow gamers, so good idea there. Possibly you could base certain critical decisions during the game on advice from the crowd, keeping an interactive feel throughout. Things such as build order, research priorities, or whether to move north rather than south could be your breakpoints for the next vid, allowing you to gather more communal input.
Didn't expect to write a treatise, just a few thoughts. Hope they're useful, and you have a new subscriber.