Cryptic crossword No 3,239

Sorry about the grid formatting :/

Hi Cricket, great to see you here grasping the bull by its horns! I’m not dyslexic and I’m still learning how challenging setting can be, so don’t be discouraged when not everything’s right first time. And be encouraged when it is! I’ve put ticks by 12a, 13a, 21a, 3d, 8d (new homophone indicator to me but I like it), 19d & 22d. I like the wit and imagination you bring to the table, and if you’re prepared to work on the technical stuff I think you should progress very well. More below…