@Dody Setyawan , not bad, but a few things to keep in mind:

a) brightening your images will give them a more natural look.

b) rotating them will make them look much better in-game too. Keep in mind that the face should be straight-on, rather than slanting or at angle; i.e. the eyes are ideally in a straight line and parallel to the top or bottom of the cut.

c) When you have a lot of images to upload, then you should upload them as a pack instead of individually and save the both of us some time.

You can also upload up to 50 images per pack instead of just a maximum of 4 when done individually.