Hey and welcome fist of all!
The diodes should be no problem - 1N4004 is suitable for higher voltages (which is not needed here) but otherwise does the same.
As general advice always re-check placement of components and cuts, and also the transistor orientation. Look for solder bridges and cold joints.
To get more advice you should describe your problem in more detail - e.g. is there any sound at all coming though, does it react at least to changes of the VOL pot...?
Images would be helpful, too!