This copies the selection to a new layer above. In other words, don’t waste time trying to select his white hair out from the cream-colored background. This is going to be a 120-pixel image when we’re done, so accuracy is not that critical. Next, we’ll select his head with the lasso tool. Crop in on the head and a bit of the shoulders to fill up the maximum area. Set your Crop tool to “Square” in the Ratio drop-down menu. When you use this emoji to acknowledge someone’s post, imagine the warm feeling of support Harold will bring to the conversation. Harold is going to be our model - in a nodding, or approving, motion. Harold, our emoji-to-be, is trusty, friendly, kind, and ready to help. gif, save it correctly, and upload it to Slack - ready to use. So, where do you go for emojis that don’t exist? In this guide, I’ll show you how to make a simple animated. If you’re a Slack user, perhaps you’ve gone looking for the perfect emoji to really nail a joke, a conversation, or a direct message. In this guide, learn to impress your friends and coworkers with custom Slack animations, and bring a little harmony to the workplace with a personal touch.