You can use verbs that are concrete/physical (such as "Cut," "Draw," "Screw in," etc), or you can use verbs that are abstract/non-physical (such as "Consider," "Be aware," "Understand," "Avoid," "Limit," etc).
Avoid transitional or introductory wording. Start with a clear action verb—an activity for the person following the instructions to perform. Avoid starting with, "First," "Then," "Also," or similar introductory words. Conditional phrases are sometimes acceptable. For example: "If the top turns brown, remove it from the oven immediately." However, starting with a verb is still preferred: "Remove it from the oven immediately if the top turns brown." Avoid using personal references (I/me/my) in your steps. Instead of saying what you did, say what you want your reader to do. Each step should read like an instruction or command.