Clearly the upload system hates me tonight.
Okay, here we go. These examples are not full size (they’re at 20% so the upload system will let me attach them) but hopefully they can show how an old reskin will have issues compared to the new layout of the default sprite. Now I’m not sure which class you’re currently working with but I see a Graverobber portrait in your image so it could be her. What you need to do is to compare your image to the new default one for the class you’re working with then basically change yours to match it. Now this isn’t as hard as it sounds since you can basically copy & paste onto a new layer, move things, rotate them and resize them then simply delete the new layer underneath (or delete part of it).
That’s the easiest way that I can explain it as the layout of the image varies from class to class. I hope I’ve been able to help.