Good advice from treewind, which I won't repeat.

I do have one question, though: Are you any good? Do you honestly feel that you've got what it takes to hold an audience for 30 minutes - 45 minutes - 2 x 45 minute spots? If the answer to any of these is not a positive "yes", then you have to work even harder. I'm not implying that you're not good, by the way, just that you have to have a realistic view of how you measure up - ask people for their honest opinions if you're not sure.

OK, so you can sing. Good! Can you perform? More than that, can you entertain? It's not always the greatest singers or performers who get regular work. Rapport with an audience, the ability to click with an audience, to feel at ease, to engage, perhaps to amuse. The ability to not get phased or panicked if a spot isn't going well. Being totally rehearsed and professional in attitude. These are also important.

Are you performing what people want to hear? No reason that you should, by the way - do your own thing by all means - but knowing what 'sells' can be important. I'm always amazed when I get a booking in a mainly traditional folk club, because traditional songs form a very small part of my repertoire. Quite apart from ceilidh band work, which is regular (if seasonal), I perform anything from jazz to blues to rock'n roll. But I do a fair number of freebies - at which I'm usually asked for a card or a telephone number - but I wouldn't get asked for card or number if someone hadn't heard and seen something they liked... So the freebies can bring in gigs.

And how far do you really want to go? I sense some ambiguity about this in your post.