Memoji

Memoji's are nice stickers to use in chat apps.

https://support.apple.com/nl-nl/HT208986

explains how to make them on an Iphone.

After that you can export them to app these memojis to yourself. Connect your Whatsapp to a browser to save these webp images to a folder. From now on you can import these into Whatsapp, Telegram and Signal

Import in whatsapp

Once you have images that are eligible for WhatsApp stickers, you need some apps in order to import them as stickers into WhatsApp.

Follow the steps below to import and use your custom stickers on WhatsApp:

  1. Download and install the latest version of Personal Stickers for WhatsApp, Xplore and WhatsApp from Google Play on your Android Smartphone.

  2. Using Xplore, place your custom sticker images in the default Download directory of your phone. That can be done in sub folders.

  3. Launch Personal Stickers for WhatsApp. It should automatically detect the sticker images in the Download folder and sort them into different sticker packs according to the available subfolders. If you want to create customized sticker packs, click on the Kebab menu icon on the top-right corner and select Create Sticker Pack. Select the stickers that you want to include in your sticker pack, provide a name for it, and tap on the tick mark on the top-right corner to confirm.

  4. Click on Add adjacent to each sticker pack to import them into WhatsApp.

Once the import is complete, you should find the newly added sticker packs in WhatsApp. In WhatsApp, open a chat, tap on the emoji icon in the bottom-left corner and select the Sticker tab. The newly imported stickers should be available for sending. Just tap on a particular sticker to send it to the chat. The selected sticker will be sent to the chosen contact or group.

The additional WhatsApp stickers added externally are stored locally on your phone and aren’t currently backed up on WhatsApp servers. If you log in to WhatsApp on a different device, you’ll lose access to all custom stickers.

Moreover, even if you just move the original sticker files out of the Download directory and place them in any other location, you’ll still lose access to those custom stickers.

Import in Telegram

In telegtram it is a lot of work. Use the desktop version in a browser. And start the sticker bot. https://telegram.me/stickers

Now you can upload every individual sticker, and connect it to a emoticon. Thats not easy, but you need to do so. The sticker bot gives explanation about the commands you need to use. When finished, you get a URL that canb be used by everyone to import the stickers. No other software needed.

Import in Signal.

You need the desktop version of Signal. Read more here.