Never made any custom content before? Start with the easiest, most basic stuff (which you can make with all free programs) - Sims 2: Walls, Floors, and Ground Cover, Sims 3: Custom Patterns
Just installed the Sims 3 patch or about to? Read this article for helpful advice about patching and keeping your custom content working!
Just use my stuff however you want,
except for, of course , the usual:
+Uploading on other sites (especially if you say the work is yours)
+Generally claiming my work as yours
+Using my stuff without giving me credit
Yes, you can recolour, with credit, use my stuff in your pictures, don't have to give credit for that.
If I missed anything , message me .