Конкурсное задание выполнено. В приложении внедрён интерфейс загрузки изображений из Галереи или камеры, выбора контура, emoji. Приложение поддерживает экспорт созданных стикеров. Среди существенных недостатков приложения: 
– Не представлено локальное сохранение стикеров.
– Редактирование уже созданных сущностей недоступно.

Озвученные недоработки, а также общий уровень реализации, включая отсутствие более продвинутых инструментов для работы со статичными стикерами, помешали продвижению работы на более высокое призовое место.

=====
Приз: 750 $

After Selecting a photo and created square shape and selected an emoji. clicked on Next and got a short message "Sending Stickers Failed"

It seems like only one emoji per sticker can be selected.

In Telegram, each sticker can have multiple emojis (using the @Stickers bot), so I don't see why this shouldn't be supported. In the linked page (https://github.com/DrKLO/TelegramStickersImport#how-to-use), it doesn't say that each sticker is associated with only one emoji - in fact, it uses the plural ("relevant emojis for every sticker", not "a relevant emoji for every sticker"). Other apps support this as well, it can be realized by simply including multiple emoji in the intent's emoji string list.

Users need it to get suggestions for multiple emojis, it's not like the rest will be discarded. For example, a laughing sticker may be suitable for both the 😂 and the 🤣 emoji - if a user then uses any of these emoji, the corresponding sticker will be displayed. This would not be possible if only one emoji were allowed.

Anyway, it's not really on us to decide this anyway, Telegram has already implemented it that way with support for multiple emojis. I don't really think it's a big problem that your app doesn't support that though, so I wouldn't worry. I'm also sorry for these issues in which I just reply to you, I'll delete them (except for the first) later on so it doesn't look like your app has more issues than it really does.