Depends on the planet. Saturn you will see the rings with your 25mm eyepiece (EP), and more detail with the 10mm. Jupiter, the same (except for the rings
). Mars is getting small, so a larger-than-star dot is might be all you get. Star should focus to pinpoints, esp. in the 25mm EP.
Sorry, the manual I linked is for the GSO 10". But most of the info should still apply. Your Skywatcher might be more like the Celestron 10".