If you wish to apply for adminship you may here, but remember READ THE REQUIREMENTS.
You must have at least 15 edits in order to request, and your request must be at least 4 sentences long explaining how you know to use the powers and to use them with good power and not abuse them. Also if you were blocked at least a week past, you must wait a week to request for adminship. You must have been actively contributing mainspace edits for at least a week.
Also if you're first request for adminship fails, you must wait 10 days until you're eligible to request again if you are making a second request, remember to put /2, /3, /4 etc.