Use your lightning spell on the air defense. If they don't have an air defense either use it on the mortar or don't use it (depending on how good the person is).
Deploy 1 goblin closest to the clan castle. If troops come out, deploy all of your archers closest to the clan castle troops.
Deploy 5 giants closest to the air defense. Place your 5 other giants next to the wizard tower, and if there is no wizard tower, place them next to the mortar. After the air defense is destroyed, place down 5 balloons next to the best archer tower. Place your other 5 balloons next to the second best archer tower.
Deploy your 15 goblins (if you have them) right after all of your giants and balloons are deployed. Also, use the healer & healing spell if needed.
After all defenses are gone, deploy your 15 barbarians to clean up.
(No execution notes)
Use wall breakers as needed. This guide should help you against town hall level 4, 5, & level 6 players. Have fun!