Hi Jenny! A few pointer for you!
Cake! You may have lost a bit of contrast due to strong light coming in through that window but the soft-pastel effect is nice and there is good delicate detail in the cake. Sometimes it is best to use the window light as a light source but not as a background by shooting the subject form an alternative angle and using a plain wall as a background. That way you can maintain the soft quality of the window light without strong color in the background.
The beside the car shot: The lighting on the skin tone and the dress is very nice and there is tactile texture and detail in the fabric. Since some of the skylight is coming in form directly overhead there is little or no light in the eyes. I don’t know if you used flash fill on this shot but sometimes just a wink of flash will open up the shadows in the eyes and create catch-lights. Another solution in that kind of lighting is to have the subjects looking at each other in which case the shadows in the eye sockets will not be apparent. If you have the person escorting the bride helping her out of the car or something with more action going on; the shot will be more animated and natural. Also- watch for trees and polls “growing” out of you subjects heads. In shots where you can see vertical references such as trees or buildings, it is important to avoid camera tilts. That can be corrected in a bit of cropping and straightening the image.
The ceremony shot: Try to catch the couple facing each other so that you can see both profiles. The expression and the position of the bride that you captured is very good!