Hello! I saw that you are new on steemit so welcome aboard. I just upvoted you for this as you deserved it and I'm waiting for many more posts in the future!
I am struggeling, like you, to get those big upvotes on my posts so maybe you want to try @MinnowPowerUp where you can earn up to 30% more steem power than just directly powering up! It's a subscription based daily upvote bot that draws its power from a delegation pool. I have more info on my experience with the system in this post where I explain how I earn over $1 a day from upvotes.