Adel

You can rotate texture with the [space] key. With H & V keys you can turn texture horizontally or vertically.

Here you go~
Mobs.rar

Here you go~
EL.rar

Try starting from 3899

The pet accessory for poring is poring_Ã¥°¡¹æ.act. There is only an act file for pet accs. Lua file that is related to pet accessory is datainfo/petinfo.lua

Try changing your mob ID to 3900 and go on from there.

When you diff your client, make sure to have the following unchecked.
Ignore Resource Errors
Ignore Missing Palette Errors

À̸§¾ø´ÂÄ«µå is the name of the card image
Here is an example from iteminfo.lub
 
 
 

You have to add your town in to npc/mapflags/night.txt

If you want to remove these models from the map, take an existing model and re-name it to the model name the map is looking for and delete the models through Brow.

Another way of altering the shadows are through Lightmap > Export/Import
You can edit shadows using an image editor,  eg: Photoshop
and import the images back.
 

A. Have you tried this tool? Click Here It is far better than Actor 1 or 2.
B. Act00 is for the 'Idle' positions of the character. Act09 however I'm not sure about.
C. Not sure how this is done, but this might require some client editing as well.

For the first part of your question, you could easily make a new image using Photoshop.
For the second part of your question, it is script related:

 
 

Here you go~
Christmas_Hood.rar

I'm not sure where the textures are exactly located, but this is how it looks like.


 
 
Edit: Ok the textures are located in: Data/Texture/À¯ÀúÀÎÅÍÆäÀ̽º/basic_interface

The error is saying that it cant find the female version of the hat. Re-check the names, copy the file name from the male and paste to female. eg: ¿©_wtvr.spr  & ³²_wtvr.spr

You have to do check the option below when diffing your client:
 

Here you go~
magical_booster.rar

You can use K3dt's Palette Converter.  Click Here.
 
Note: You will be warned about this virus when you download : HEUR:Trojan.Win32.Generic
But it is NOT a virus. You may click here for more information on that.

I just tried out converting your bmp image to a sprite and I got the same result as you mentioned. However, I re-saved the image using Paint and then tried converting into a sprite and it worked.
So try re-saving all your images again using MS Paint.

The sprite is like that because it is a 'Robe' type of sprite. If you want to make it into a normal headgear sprite, you will have to edit the frames. Of course it wont look perfect as a Robe.

Make sure to have 'Encode' un-checked when converting your bmps into a sprite.

You can find this sprite in the data.grf or rdata.grf
Here you go~
Chewing_Gum.rar

what I usually do it crop out each image, but I think you can use the 'slice' tool as well. May be that's way easier than cropping but I'm not too familiar with the slice tool.

Answered to your PM regarding this.