Lopsided Elongated Stitch Scarf

Okay, so I bought some BEAUTIFUL yarn at 50% at my LYS (Dune by Trendsetters) and decided to make a dressy, skinny, elongated stitch scarf to wear with a sweater. I’ve never done elongated stitch before and find that it is easy and beautiful, especially with this yarn. The problem is that my end stitches tend to be loose and uneven. One end is shorter than the other end. I’m sure this is a tension thing - but does anyone have any suggestions. This yarn is the perfect choice for this pretty scarf and I want to wear it with a dressy outfit to a wedding reception. But I don’t want it to look bad. Thanks in advance!