C19 capacitor C smd near the transistor, insert the same as you have on the top left near the transistor. C20 15 pico ttl line, this one is not necessary, in some cases it is necessary where the resonator works. Edit is not better than the line. C20 is the same copy goes out of the transistor.
R7? resistor I do not know what kind of circuit it is, you can read it, you need to find a dataschet or some scheme in googole from a typical application for it, I would do that.