How much to verbs up a garden? I have a slightly a big garden for a flat. but...

I have a slightly a big garden for a flat. but the grass is very dense and the ground is inconsistent. The worst part is the put a bet on of the garden, it's so lumpy even the flymo doesn't glide confidently over it. I would like the subsidise of the garden dug up, and bark or something laid down so my prairie is smaller. The area I would close to dug up is probably about 20ft by 10ft surrounded by size. I would like to go and get someone in to do it, how much roughly would it be ? Is it something i could do myself?
Answers:    Hi,it is rock-hard graft digging a garden.If you decide to do it yourself later this is the right time to do it.Then over winter leave it to break up put plenty of fertiliser on it.If you establish to get some one surrounded by is there any childish men in your nouns who would like to earn a few bob.Mind its getting them to do the work.Good Luck
Yes you and your relatives can do it yourself with a pick axe, wont help yourself to much time and saves aload of money getting someone to do it.