Yes, you can create custom stickers in WhatsApp using third-party sticker-making apps. There are many sticker-making apps available on app stores that allow you to create your own personalized stickers and use them in WhatsApp chats.
To create your own custom stickers, you can download a sticker-making app such as Sticker Maker, Stickify, or Personal Stickers for FM Whatsapp. Once you have downloaded the app, follow these steps:
Open the app and choose the option to create a new sticker pack.
Add the images or pictures you want to turn into stickers.
Use the editing tools to cut out the part of the image you want to use as a sticker.
Save the sticker to your pack.
Repeat the process for all the stickers you want to create.
Once you have created all the stickers you want, publish the pack to WhatsApp.