The next step is identifying a good venipuncture site, that is the site where you will 'puncture a vein' by inserting the IV cannula. The figure above shows some commonly used sites in the hand and forearm.
In selecting the site for venipuncture:
The visibility of the veins can be improved by encouraging the woman to close her hand into a fist and then open it again several times, lowering the arm and stroking the chosen venipuncture site. As you become more experienced, you will find it easier to choose a suitable vein which is easily visible, not twisted, where you think you can enter your cannula easily.