1. Select 'File'->'Open'. And, choose '*.psk' as file type.
2. Then, open the '.psk' file in somewhere that is stored.
3. Left click the 'Head' window. And, select 'File'->'New Texture' or 'Import Texture'.
4. Left click the 'Body' window. And, select 'File'->'New Texture' or 'Import Texture'.
5. Paint it.
6. Save it as '.upp'.

2. Then, open the '.psk' file in somewhere that is stored.
3. Left click the 'Head' window. And, select 'File'->'New Texture' or 'Import Texture'.
4. Left click the 'Body' window. And, select 'File'->'New Texture' or 'Import Texture'.
5. Paint it.
6. Save it as '.upp'.