you need to take the pictures from the panel and resize them to your desired size with an image programm like photoshop or gimp and then you need to change the size of the whole fonts.
i saw some nice sensorpanels and i needed to do a new one...it is inspired by some of yours and i took the round gauges (i do not know anymore from who..sorry)
but here you can see it
i have build my own sensor panel, inspired by some others, one with same background as wallpaper and one with nice borders.
panel size with 2560x216 pixels...