I drew this rose previously using my drawing tablet, and I thought it would be interesting to try the same bloom using a different approach. So this is the reference for this rose drawing tutorial. You might prefer to try a different one. If you can, get a real bloom to draw from life.
I used a simple Artline fiber-tip pen for this tutorial, on a generic brand of multi-purpose sketching paper. Office paper works well for practice sketches. Test out your pen and paper first to ensure that it isn't inclined to 'bleed' ink into the fibers.