Gerry, I would now put the shoes on and walk around the house as you would normally do. I don't mean flex them every which way like a piece of rubber. Just a gentle walk around the house with them on, laces tied etc. If all is okay, then continue as you like.
If you deposit the entire amount of wax in one sitting, or just lay it on too thick... you might experience cracking.
Edit: This is especially true if the shoes are new, without crease lines set in place. I see that yours have cap toes, so probably a little safer.
Don't blame the messenger
Thanks, Lear. I've been walking around the house and the flex point is before the to cap so things should be ok. Track pants and balmoral boots are an interesting look to say the least - perhaps for the next Pitti ...
Thanks, Crat. Would it make a difference in your preference if the shoe had a toe cap rather than being a plain toe?
Lear, I hope you don't mind me posting the picture below but this is what I'm aiming for: