Feedback for newb Arms Raider

[stuck delta]

Good day,

I'm relatively new to Arms Warrior (started in December), and only recently (starting with Season 2) started to get into M+ and Raiding.

Looking for raid feedback specifically, since I feel like I am doing what I should rotationwise but clearly my DPS says otherwise.
Also can probably take that feedback into M+ accordingly.

Here's a log from this weeks heroic LoU (this is a very casual group as a sidenote):
https://www.warcraftlogs.com/reports/CkLXKA7MWv8B4yga

I tend to do okay on Sprocket, and overall it fluctuates from boss to boss.

Character: Eschbach
https://www.warcraftlogs.com/character/eu/tarren-mill/eschbach

What I noticed so far (also also: new to logs in general):

• My Mortal Strike count seems lower than others when comparing logs, I'm not sure why, feels like I hit it on cooldown.
• Juggernaut uptime seems inconsistent despite using the weak aura for pre-execute phase.
• I tend to hit Rend too early, which probably affects uptime as well

I'd love to get any feedback/criticism, especially if there's something more obvious I'm missing.

If there are any questions let me know!
Thanks in advance!

[languid temple]

https://wowanalyzer.com/report/CkLXKA7MWv8B4yga/27/608

Execute and opportunist OP usage is where you struggle

Also 20% downtime on sprocket for example

[stuck delta]

Thank you! So for pre-execute phase I presume I hit the first time it comes up and then listen for the weakaura and only execute at that time. Or is there something I'm overlooking?

[languid temple]

No, always listen to the WA that tells you to send execute