Help Solo With Imagery (Ali)

Name: Solo
Tribute Name: Riven Fowley
Link to Reaping Post: Here. Not exactly the best post I've made.
Roleplaying Strengths: I think I'm fairly good at logically walking through my characters thoughts and describing them, decent when it comes to action, and good at describing scenery
Have you been in the Games before? Nope! First time.
What, specifically, do you want help with? At the moment, I can think of two things. I notice a lot of imagery and figurative speech used on this site, and it's a very different style of writing then I'm used to. I really like it and I'd like to learn how to do it without turning my post into a bunch of nonsense that completely steps away from what's actually going on. That's the main one, and a second one could be action. By that I mean anything from fights to grabbing some food and sitting down at a table. I think I'm alright at it, but there's room for improvement.