All the info bạn need on creating custom content, including a lot of tutorials, can be found at Mod The Sims (
link). However, bạn need to be really good at 3D modelling and have the right programs for it if bạn want to create stuff from scratch hoặc modify the shape of existing objects. If bạn just want to do recolors, then bạn need a good graphics editor like Photoshop. bạn also need a program called SimPE to chỉnh sửa the package files. If bạn go over to Mod The Sims and have a look there, it tells bạn all bạn need to know. But it's not easy - I had a go at just modifying the size of some hoop earrings to make them bigger, and it took days to get them working right!!
