I never thought of myself as being a good songwriter. There are a ton of other people that are good songwriters, but I don't think I'm in the club. What I do well is perform, sometimes sing pretty good, and accompany myself well and arrange fairly well.
With such thoughts in your mind, now that you have resolved to love Him and please Him with all your strength, your only fear should be to fear God too much and to place too little confidence in Him.