Blood Draw Experience

Hi! I am currently and RN working in an ob/gyn office. We have a lab that does all of our blood draws. However, we were recently told they could no longer draw our genetic screenings as they go to a separate labs - so we have to do them. I have received VERY limited training on blood draws in school, and obviously have not been doing them for the last year at my office as the lab was responsible for this. I know the technique, but am not at all confident in performing them. We practiced on our co-workers, but unfortunately they were all blessed with incredibly easy veins to stick.

Any nurses in the Greenville SC area know of a place that offers a short refresher course (the phlebotomy training courses at Greenville tech are extremely long and rather pricey)? Or somewhere I could shadow for a weekend to refine my skills? Any help is greatly appreciated!!