Hi, sorry not been back on for a bit (had a car accident and a busy life).
The track out of the bottom of C13 can run on top under R12 and C14 to get to Q5.
The track from the bottom of R12 can run the same way above the previous track to get to Q6
See where the top pad of the crystal, the diagonal track exits it - this is forming what is called an "acid trap".
Although this is highly reduced with modern manufacturing techniques it is stil not completely removed so it is best to always design your tracking without "angles of less than 90 degrees" where acid can get trapped (and then later in board life eat through the copper breaking the track).
Can IC2, L1, D1 all copme down a little so that C1 can fit directly above them to make that little path between L1 and C1 as short as possible.
Then C10 move left a bit more to bring it closer.
Unless there is something physical in the way.
Increase the track width from the terminal block to IC2 (via C10) to match the rest of the track.
You may as well, you have the room and it will only be a benefit.
(on the legend, add + and - marks (both!) outside of the body so can be seen with cap in situe.
You may like to duplicate the +/- mark inside the body to make it easier to see during insertion.
Why square vias? I have never understood why people still use those, AFAIK they went out with tape and crepe pads.
The via next to the Q7 text, move it down a lot further, closer to the horizontal top track (less of a break in the bottom GND then).
Looking at your GND, to get from the IC2 area to the RH edge the current have to either go through the small bit by D4 or under the crystal and through, above, down and around IC1.
Move the via just above where iit says D4 straight up to really improve that path.
The track that goes on the bottom underneath the IC, down to the via by the D4 text, unroute it and reroute it on top up, left, around the crystal, down then figure out th rest of the path.
That way you will be able to flood GND undernath all the IC and not split it (thats bad).
Any split in the GND return paths is bad.
That long bottom track from C7/C8/C9 is splitting the return path of the tracks to IC1 and sending them on a windy path.
IMO it would be better if you could minimise this.
The track from C13 into the left pad of Q3, why go on the bottom - its double sided yes? Just go into the top of the pad.
Ditto C14-Q5
If your able to reassign any ports to enable you to track out better, without having to go onto the other said to reach the destination then its generally a good idea to do so. (unless this causes big problems in coding).
Don't forget what has been said about the mounting holes and keeping the copper clear of them.
Mattylad.
CID+