Remove that mess of different capacitors in parallel. Use only one value. Some prefer 1206 or 1210 package, but I usually use 0805 and just more of them in parallel to get the desired capacity.
Of course, if Vin and Vout are significantly different, then the input caps will be different part than output caps, and that's fine.
Layout: make the input and output side-by-side, not "from left to right" like it is now. You can get all the capacitors closer to each other.