In every archetype, you should be identifying and maxing the archetype specific cards that are what makes the deck worth playing over other decks in the first place. Usually, these are cards that generate advantage with little to no effort at all.
In this deck, the cards are Supervise and Gemini Spark. Which you SHOULD be playing 3 of each.
Your monster lineup will probably need to incorporate more of the powerful level 4s to synergise with the multiple Sparks. The Crusader of Endymion and Dark Valkyria pair would serve as a decent combo, as well as being able to fuel the OP Black Luster if you should get your hands on a copy.
Imo, Phoenix Gearfried should be ran in minimal amounts, as the only consistent way to get it out is to dump it via FF/Featherizer and then going into Blazewing Butterfly/Supervise. Speaking of FF, Dragon's Mirror is also a card you could consider to bring out Superalloy Beast Raptinus more consistently.
The deck also runs a lot of traditionally 'bad' cards. Bad in the sense that many of these cards are detrimental in terms of card advantage, or hindering you from achieving the game state you wish to achieve.
Kotetsu and Exiled are two examples. Instead of dedicating your once per turn normal summon/set to them, you can instead be setting Featheriser or any of the aforementioned Level 4 Gemini beatsticks, which essentially generate more pluses either by thinning the deck allowing you to draw into your power cards quicker, setting up your grave for Dragon's Mirror into Superalloy Beast Raptinus, or by generating that +1 through battle.
Reload as well. It just blatantly leaves you with 1 less card, for no reason at all, and does not permanently fix the problems you have with drawing badly (the proper solution should be editing the decklist)
Should also be running Heavy Storm and Dark Hole.
Lastly, if your friend is playing you, and no one else but you for the most part, do max Imperial Iron Walls.