So what you need is to play with css position property.
give to parent element position: relative and to the overlaying child position: absolute, then play with the exact position using left and top properties.
should be something like this:
.parent {
position: relative;
display: inline-block;
}
.badge {
position: absolute;
left: 10px;
top: 10px;
}<div class="parent">
<img width="170" src="https://images.pexels.com/photos/1097456/pexels-photo-1097456.jpeg?auto=compress&cs=tinysrgb&dpr=1&w=500"/>
<img width="40" class="badge" src="https://image.flaticon.com/icons/png/512/1977/1977845.png"/>
</div>
<div class="parent">
<img width="170" src="https://images.pexels.com/photos/1097456/pexels-photo-1097456.jpeg?auto=compress&cs=tinysrgb&dpr=1&w=500"/>
<img width="40" class="badge" src="https://image.flaticon.com/icons/png/512/1977/1977845.png"/>
</div>
<div class="parent">
<img width="170" src="https://images.pexels.com/photos/1097456/pexels-photo-1097456.jpeg?auto=compress&cs=tinysrgb&dpr=1&w=500"/>
<img width="40" class="badge" src="https://image.flaticon.com/icons/png/512/1977/1977845.png"/>
</div>