IV suggestions

If possible, choose a vein that is firm to the touch, not rubbery or lumpy, as these tend to have lots of valves. Try to use as small a catheter as possible for the vessel you've chosen, and once you've pierced the skin, the stylet should be almost parallel with the surface. The instant you get flashback, advance the catheter slowly but steadily with your dominant hand, while simultaneously withdrawing the stylet....this is the important part, as you will punch right through the vein if you continue to advance the catheter with the stylet still inside. Attach your Y-site (or whatever your facility uses) with the NS flush, remove the tourniquet if you use one (also very important, as too much pressure can easily blow the vein as well) and flush a small amount of saline through the line. If it flushes OK and no lump appears under the skin, tape according to your preference and flush the rest of the solution, then attach the IV tubing or saline lock as ordered.

This works for me about 90% of the time. Try it, and see if it helps your performance. Like anything else, it takes time and LOTS of practice to become proficient, so don't be too hard on yourself while you're perfecting your technique.:)