I can take a crack. Is it good? Not yet (sorry but that's ok), and apologies if I sound a bit harsh:
First, it's really hard to give you a good review here. It's a low-DPI image and you have all of the fab text visible which makes it very messy and hard to read. Generally it's good to take a picture of the whole board with the fab and user graphic layers turned off, and individual pictures of the front and back copper. (And inner layers, too, if you have them, especially if they have traces).
That said, from what I can actually see (which isn't much):
* The hell is going on with all of the REF** items? Do you not have an actual schematic drawn that has assigned references? Use: Annotate Schematic on your schematic page if so. (lHonestly? t looks like AI drew this from a naked netlist it extracted from your reference schematic. Ask me how I know) You need to have reference designators ("refdes", like R12 or C9 or whatever) for a lot of stuff to work properly, and to be able to describe which component you're talking about.
* You need a ground plane. Both sides. You don't route ground as a separate net except in specific circumstances -- create a 'filled zone' and assign its net to GND, and press 'B' to fill it -- it will automatically connect all of the grounds. If there are RF-specific stuffs you can use keepouts.
* There's some weird routing - e.g. look at the traces going to CE, LE on your connector, they wiggle. Use the 'D' key to 'Drag' segments of traces around without erasing them and starting over -- sometimes you do have to start over, but often times you can drag things into straighter lines.
* Don't use right angles for traces if you can help it. (e.g. ground trace on bottom layer which shouldn't exist because it's a ground trace)
* Why does your trace cross layers right before it gets to REF** (see?!!)?
* You should use thicker power traces - at least 0.5mm. That's potentially overkill (there are calculators that tell you) but you don't necessarily want to shoot for the minimum that won't burn up unless you're engineering your way around a space constraint. Other traces could probably be thicker as well - no need to optimize for the thinnest thing that will fit.
* Put your board name and revision number on silkscreen. Sorry to tell you, you're going to have more than one version of this built, so better to grab the right one from the drawer.
* Round your corners (right click on the edge.cuts rectanlgle, shape modification -> filet edges -> 1mm). The 90 degree corners are sharp and the rounded corners look a lot more professional.
* How are you gonna mount this - will it just float in air somewhere suspended by connectors? (I mean, honestly there are worse plans for a small board like this). But if you're going to mount it anywhere, even just screwing it down to a piece of wood, you might want to have mounting holes.
(Mounting pad symbols on the schematic, make the holes whatever size you need)
