Should you wish to use your emojis in iMessage, this is how to do it. While using iMessage, look for the application's icon (a dog) in the tray and tap it to access and send your emojis.
A visual example on how to use Animaker emojis with iMessage.
This guide is also available in the app itself should you require a quick reminder.
Get DogGoArt on the App Store here.