Welcome to the Speedsolving community!
Seeing that your 3x3x3 times are at 1:45, I suggest you practise and practise, as it has been said before, until your times are below one minute, perhaps even right under forty seconds.
When I was at your stage, I just practised--I figured out a few cool things I could do with the algorithms I had, and I got down to 35 seconds with solving "layer-by-layer", or one layer at a time.
Where did you learn how to solve the cube? I think I could help you more if I knew.
anyway, once again, welcome! Be careful--there are a lot of sticklers for the enforcement of rules and there are yet trolls. Don't make unnecessary threads on this forums--first use the forum's search function, located at the top of the page, or if it's a one-answer question, post in the
One Answer Question Thread.
Thanks for joining! I hope you have a great time here.
--Ranzha