Congratulations on your filly. It sounds like you have really bonded with her. You're going to want to start a trick that you notice she already has a propensity towards. For example: If your filly bends her neck often (AKA flexing) then introduce the hug. I have a mare that enjoys turning her head to look at her side and tail. No issues, she just bends her neck and looks. She picked up on the hug right away. We also took advantage of her natural flexing by bridling her and using the reins, from the ground, to continue her flexion and also when we asked. She went into that very easily and quickly. To summarize, each foal is going to be different. Go with her flow, and expand on it!