Follow This Packing Technique to Make It All Fit
Start with your shoes (I recommend keeping them in shoe bags to protect them from scratching). Then, make sure everything you pack is well folded or rolled up to minimize wrinkles and take up less space. I like to fold everything flat for easy finding, but I roll the tank tops and shirts to fill corners.
Start with the heavy fabrics first, and end with the most delicate pieces on top. Use toiletry bags or ziplock bags to pack your bathroom essentials to keep them from spilling on other items — some airports still require transparent bags and only let you bring a certain amount of liquid per person. Make sure you are aware of the regulations for each location when traveling with liquids to prevent security from taking them.