How to make my deck better?

First off I've noticed a few monarchs; I like to use trap monsters such as Zoma the Spirit and Embodiment of Apophis with them as it makes a very good combo not to mention those traps can also be used for a synchro summon. I also noticed that you're not running a Monster Reborn or a Call of the Haunted, those are a must. Also with the tuners you have it wouldn't hurt to throw in some synchro monsters like Stardust. Other than that, it looks like a solid deck. By the way, If I were to take out anything, Thestalos would be the first to go.