Since u use tanks and vultures i guess u mean TvP. Tanks cant really be microed since they will mostly be in siege mode, but when in tank mode u can dance them to save units like any other ranged units. Vultures are harder tho, since u have to sneak them passt defences and get into the enemys base to do as much damage as possible. Try to lay mines around gateways and on ramps, and then try to kill as many probes as possible. If u encounter dragoons, try to sneak vults around all sides of the goons and lay mines to surround them. Try not to use the vultures for frontal assaults, use them to hurt the enemys economy and to protect ur tanks. If u encounter units like goons, DTs and zealots, use mines in most cases.