First, your weaving looks beautiful. It appears to be very evenly woven, albeit not sufficiently tight to have it be square.
You might consider using a finer tabbly weft. I do not use a table loom, but I do understand that most floor looms provide much higher tension and allow you to beat the weft in more strongly. Are you considering upgrading? For me, being able to use my feet and my hands feels really good - you can get into a real rhythm.