I'd try to figure out how to get the rose not quite so far from the woman yet far enough to still get this type look.
If you set up outdoors on a sunny day where there's a nice background, with more light you might be able to use a smaller aperture like f22. You wouldn't necessarily need a really fast shutter speed since the subject isn't moving, but your camera settings would need to be fast enough so you don't get blur from the shutter moving too slow or from camera movement (I can do 1/125 hand-held, maybe 1/60 at the slowest).
The creative part might be figuring out how to get the rose not so far away - the easiest may be to find a friend to hold it (or someone on your floor who is looking for a study break and an excuse to get outdoors). Otherwise set up the flower so you don't have to hold it and the camera. What comes to mind is maybe using a box (as needed putting an object with some weight to it in the bottom) then maybe poke a hole to put the stem in. Then figure out how to anchor the stem as needed - tape? a toilet paper tube? Or position the rose on a park bench? a tree stump? whatever is available. Of course you'd have to frame the shot to only have the upper part of the stem and rose in the picture, which would involve you figuring out your vantage point.
I have a Lensbaby and have done a little pinhole photography but haven't tried to get a really close object and the background all in focus. I do have older mechanical viewfinder cameras where the focus is well, basically everything in view, but those don't particularly give real sharp images.