Jolly good show! you are back on the horse! I like your experimentation with different mediums so keep doing what you are doing. dissatisfaction of your work is a powerful tool, it can make or break you so make sure you use it wisely. It should be make you ask questions on why you might be dissatisfied with your piece which if constructive would lead you to ask questions of "what if I do X instead or try Y?" and if you keep on going on with the process without dropping the pencil you gradually start to improve the things you were once dissatisfied with so just DON'T DROP DA PENCIL!