So as you can see in the first photo the lighting wasn't great and it makes the photo look even worse, when I open Photoshop the first thing I do is go over words on pictures and make them stand out more I do this by using the Sharpen Tool. Next I mess with the contrast and the brightness dependant on the photo will depend on how much I mess with them and obviously this photo was very dark before so it needed a lot of brighting but not so much it looks out of focus. Next I use the vibrancy tool which just gives the items in the photo a bit more glamour to them, if you think certain ones need it more than others you can go around them first and just do those. Then after this I use the exposure, I usually start with the brightness adding that final bit of brightness and then the offset exposure which makes your photos look a lot softer and it's perfect for Christmas as it gives them a more Christmas-sy feel.
I hope you lovelies found this useful and if you fancy any other editing tips let me know!