I've stitched the petals with chain and the base with back stitch. There are so many variations of the chainstitch that could be used for outlining. Couple of years back I'd done a sampler with just the chain stitch variations. No other stitches were used. Here are the pics
The entire sampler. Click here to read the post on chain stitch sampler
So far I've posted 4 methods of outlining - stem,outline,split and chain. I tried a few more - some came out well while some not so. Will tell you about it in my next post.