Make it a game, the foal will let you know when he/she is no longer interested in playing the game. Get your brushes and combs and just mess with it. You will know when he/she has gained enough trust to try a halter. Once you've gotten that accomplished, put the halter on and loop the lead rope through the fence, but don't tie it yet. Brush the baby and pet it and pick up his/her feet, scratch his/her belly, etc. Don't rush the foal and try not to scare the foal. Let him/her smell things and walk away, usually he/she will follow you out of curiosity. Let him/her smell again and then slowly approach, while talking to the foal, and brush him/her or comb his/her mane. Take the foal to the side when breaking it to lead, usually it will turn and take a step or two - pet it and praise, try again. Always give it time to get used to new things and never force. I hope this helps.