CONGRATULATIONS TEDDY ON YOUR FIRST WIN!
Ricky was a Champion in the Conformation ring a year ago in the Havanese puppy class and has several ribbons to show for it. However, this next Sunday will be his first show in the Obedience Competition ring and we are both excited.
I don't recall how old your Teddy is, but be very careful how you introduce him and socialize him with other dogs, especially a lot of dogs at the same time. The problem is that you might traumatize him if you throw too much at him at one time and make him fearful of other dogs. Yes, take him to the shows but initially keep him several feet away from other dogs on a tight leash. Don't let other dogs come up and sniff him until Teddy is ready and comfortable for that to happen. He will learn the protocol for interacting with other dogs eventually, just ease him into it by taking him to locations with a lot of people and dogs around, but don't let other dogs come up and intimidate him. Ricky is very cautious but curious when he meets a stranger dog, especially one that is larger than his 14 pounds. He will keep his distance until he determines that the stranger is no danger to him. I supervise the introduction very carefully. Sometimes Ricky wants nothing to do with the stranger and so we just keep walking. I don't force anything. If you want to have a conversation with someone and Teddy is not comfortable with their dog, just pick Teddy up and hold him while you converse and then put him down when you are safely away from the other dog. Dogs can sense more about the intentions of other dogs than we humans can!!!!!!
I suggest you get a harness for Teddy and use that instead of a collar. It is more difficult to slip out of a good harness, plus you wont run the risk of damaging his trachea with a collar. However, here in the US, only collars are allowed in the competition ring - I don't know about Kenya.
Yes, dogs are easily distracted while around other dogs, especially at a show. There is just too much going on around them for them to process all that new information and stimulation. Ricky is PERFECT with his obedience when we are working alone, but he is easily distracted when there is just one other dog around. He is getting much better at concentrating on me through practice, practice, practice with both people and dogs around in close proximity. This type of training takes patience, perseverance, and consistency on your part. It is not an overnight accomplishment. When we go on our walks, we will often meet one of his dog friends. Ricky immediately wants to bolt and go play with them, but I put him in a "sit stay" for maybe 10 seconds with the other dog about 6 feet away and dancing around. Ricky will sit there and glower at me until I release him to play BRIEFLY with the other dog. Continue to take Teddy to shows, parks, and shopping malls, and practice your commands with him, just walking through the crowd. Reward and praise him lavishly when he does what you want.
I don't care what breed Teddy is, if you say he is Havanese, then he is Havanese to me. I hope you weren't injured when you fell. Last winter, Ricky and I were walking early in the morning on a sidewalk that I soon discovered was partly icy. Both feet went out in front of me and I fell on my backside. I was fortunate I didn't crack my head as I went down. It scared Ricky to death and he was very concerned about me. Be careful out there, especially when you have that irreplaceable doggie with you.