Advice on how I can improve my screenshots are greatly appreciated, I love doing things like this as a hobby.
Welcome to the section!
As to advice, zooming inwards while bringing the camera back to avoid a wide perspective can always help composition and should be experimented with. Using in-game DOF can lead to inaccurate blur, and the more lamps and less normal lights the better. Working with a photo manipulation program (i.e Photoshop) can really help with pushing works further.
Thank you for the tips! I will be sure to use those in the near future. 
Good start : )
Yea, pic’s not bad. Vioxtar said it pretty well. Try using SuperDof (it’s near the regular blur) and play around with the settings. Posing is good.