Very cute! I have a lot of experience with these as a neighbor had raised two, and I frequently dogsat and had my dog play with them.
They are very headstrong/difficult. This is in their nature as herders and needs to be understood. It's not just a behavior that you can teach them to change. You two will need to figure a good middle ground. They do not like to "come when called" - so you need to work especially diligently on that. (Remember it's the OWNER's fault for not teaching their dogs properly - meaning, with love and lots of reinforcing and love - not the dog's fault.) (This is true for any training, in fact.)
They are extremely loving dogs, and will cover you and any children with kisses, which is okay for you, but not okay for other peoples children who are more likely to be concerned than amused. They also do jump, especially on kids running around them. (Remember they are herders - they end up "herding" the kids and often pulling them down.)
You will just need to keep reminding them often that this is inappropriate, through diverting their attention to doing something different. They can be very consistently yappy, which is another herding instinct.
They are only for certain people who can understand these difficulties - If you have researched all these traits, then you are in for a long lived, sweet, loving, stubborn dog.
If you have not done your research, you are in for a long rocky road of frustration.
Hope this helps. Jude