I'd suggest looking more closely at the ITV News graphics, as what you've created doesn't look a lot like them.
Maybe try getting some static images right first before worrying about animating them. I'd recommend getting some screen caps of ITV News featuring their lower thirds and using them as a background layer in Photoshop (or similar). Then see if you can create an exact replica on top. Toggle the visibility on and off (or adjust the opacity) of what you're creating so you can check you're getting it right in terms of positioning, sizing, colour, etc.. Doing this should give you a better feel for how the graphics fit together.
Once you're happy, you can then try modifying parts of it to make it suitable for GMB. Finally, you could then go on to look at animating it.
Keep an eye on things like making sure elements align perfectly, and also don't use black text on a dark background as it's difficult to read.
You're obviously keen, but you need to concentrate more closely on the details. Good luck.
Joe and Ne1L C gave kudos