Slice 'em up, recolor them, rip them apart, base your new sims on them, whatever!
Just credit me, and never upload to pay sites!
All derivative work should be 100% free, 100% of the time.
You absolutely may convert my items to The Sims 3/The Sims 4and I encourage you to do so!
Just share the link with me and I will add it to the downloads so people can find your work.