This does look pretty bad, especially for a system that's not even 3 months' old. My UTS systems last around 5 or 6 months but from the 3rd month onwards I begin trimming the front a bit as and when hairs shed. I guess I trim on average once a month. This allows me to keep a more natural hairline and - importantly - keeps the excess skin to a minimum which means less detectability.
Use nail scissors to cut away the excess base. You will find over time that you need to move the whole piece forward a bit, because you eventually do end up cutting away more and more from the hairline. So it means you need to be mindful of the back where you might find the base doesn't cover all the bald spots. But it's easier to hide that than to hide a bad hairline (or so I find anyway).
Always but in a zigzag way so that you don't have a hard line at the hairline.
Have a look in here4 for some examples:
https://www.hairlosstalk.com/intera...th-pictures-of-your-hair-system.125202/page-7
Also, why is your base so yellow? Is the attachment not right?