Notes won't Activate for paste command

This is part of a larger project to get info from a website and transfer some of it to Notes so that I can view it on my phone.
This small sample code creates a new Safari tab with the correct info, it selects all the text and copies it to the clipboard - all fine so far.
The new note is created but now I can’t get the focus to move to Notes for the Paste (Safari remains as top window).
Can someone help me with this please?

on write_to_file(the_file, the_data, with_appending)
	set the_file to the_file as string
	try
		set f to open for access file the_file with write permission
		if with_appending = false then set eof of f to 0
		write the_data to f starting at eof as (class of the_data)
		close access f
		return true
	on error the_error
		try
			close access file the_file
		end try
		return the_error
	end try
end write_to_file

set noteName to "Test Note"

set the_html to "<body><h1 style=\"color:black;\">
<p><span style=\"color:#FF0000\">Some Notes </span>
<p><p><p>
<p><span style=\"color:#FF0000\">Some Pictures </span>
<p>
</h1>
</body>"

set the_file to (((path to desktop) as Unicode text) & "myQHSI.html")
my write_to_file(the_file, the_html, false)
tell application "System Events" to set the_URL to (get URL of (the_file as alias))
tell application "Safari"
	open location the_URL
	activate
	delay 0.5
	
	-- Copy the report from the new tab
	tell application "System Events" to keystroke "a" using command down
	tell application "System Events" to keystroke "c" using command down
	delay 0.5
end tell


-- Create Note document
tell application "Notes"
	set thisAccountName to "Icloud"
	make new note at folder "Notes" of account thisAccountName with properties {name:noteName}
	
	-- Paste to the new Note
	activate
	tell application "System Events"
		tell process "Notes"
			click menu item "Open Note in New Window" of menu "Window" of menu bar 1
			delay 1
			click menu item "Paste and Retain Style" of menu "Edit" of menu bar 1
		end tell
	end tell
end tell

Excellent, many thanks.