Batch using imagemagick to assemble a Quilt for looking glass

CreateQuilt.bat

@echo off

set quiltColumns=8
set quiltRows=6
set magickPath="magick.exe"

setlocal

set "psCommand="(new-object -COM 'Shell.Application')^
.BrowseForFolder(0,'Please choose a folder.',0,0).self.path""

for /f "usebackq delims=" %%I in (`powershell %psCommand%`) do set "folder=%%I"

setlocal enabledelayedexpansion

set outPath=!folder!\OutQuilt_%quiltColumns%x%quiltRows%.png

IF EXIST "%outPath%" (
	echo Found previous quilt at "%outPath%"
    del "%outPath%"
)
set filesPath=!folder!\*.png

echo Your files for quilt "%filesPath%"
echo Your output quilt is "%outPath%"
echo:
echo Generating your quilt...
%magickPath% montage -flip -tile %quiltColumns%x%quiltRows% -geometry +0+0 -border 0 "%filesPath%" "%outPath%"
%magickPath% convert "%outPath%" -flip "%outPath%"
echo:
echo Quilt generated at %outPath%

endlocal
pause