Ultraound IV placement

I am starting training in ultrasound iv placement. I can get into the vein but once I am in, having trouble advancing further into the vein. I have successfully started 2. Have to do 20 before I can do it on my own. Any tips for advancing once in get in? I am having trouble not looking down as well. I know this might be difficult to get help for such a visual task online but any thoughts would be awesome!!!! TIA.
Quote from RN_SaraI am starting training in ultrasound iv placement. I can get into the vein but once I am in, having trouble advancing further into the vein. I have successfully started 2. Have to do 20 before I can do it on my own. Any tips for advancing once in get in? I am having trouble not looking down as well. I know this might be difficult to get help for such a visual task online but any thoughts would be awesome!!!! TIA.