Hi Krystal, When creating your collage you can use the following Proportions Slider settings depending on the size you want to print at:
4×6″ use 40:60 or 60:40
8×10″ use 44:56 or 56:44
5×6″ use 45:55 or 55:45
If you want other sizes please let me know which and I’ll provide you with the Proportions Slider setting to minimize cropping.