Leaflet adding an offset to marker - leaflet

Question

I am getting the center of a leaflet feature to show its label.
Then, I am specifying an offset when binding the label so it appears upper and righter.
The thing is that i need to add the offset in the entryJSON.getBounds().getCenter() code.
Is there a way of adding an offset in a leaflet latlong object? ( I can imagine something like entryJSON.getBounds().getCenter().offset([-10, -57]) but this is not working...)
var marker = new L.marker(entryJSON.getBounds().getCenter(), { opacity: 0.01 });
marker.bindLabel('whatever here', {noHide: true, className: "info", offset: [-10, -57] });

Answer 1

The label's offset property works with pixels. A L.LatLng object works with coordinates not pixels. What you could do is use the conversion methods of L.Map to turn your current coordinate position into a pixel position, change that, and then convert back:
var latLng = L.latLng([0,0]);
var point = map.latLngToContainerPoint(latLng);
var newPoint = L.point([point.x - 10, point.y - 57]);
var newLatLng = map.containerPointToLatLng(newPoint);
Example: http://plnkr.co/edit/LeNqz8?p=preview
Reference: http://leafletjs.com/reference.html#map-latlngtocontainerpoint

Answer 2

a much more easier one: https://leafletjs.com/examples/custom-icons/
var greenIcon = L.icon({
iconUrl: 'leaf-green.png',
shadowUrl: 'leaf-shadow.png',
iconSize: [38, 95], // size of the icon
shadowSize: [50, 64], // size of the shadow
iconAnchor: [22, 94], // point of the icon which will correspond to marker's location
shadowAnchor: [4, 62], // the same for the shadow
popupAnchor: [-3, -76] // point from which the popup should open relative to the iconAnchor
});