I know it may not be the best time of year to do this but my garden is looking a right mess and I just want to put some grass down. I bought rolls of turf but it didn't take well and has died but is slowly growing back. Plus I don't like the turf I would rather use seed and be able to have the grass in the right shape to the space I am using.

Here is a picture of it before I put the turf down. I have removed most of the bark. I want to remove all the bark now and lay grass seed and turn the majority of it into grass apart from a flower bed I will have at the top. What is the best way to do it and the equipment I need? I'm not an expert so need all the help I could get.
Thanks in advance.

Here is a picture of it before I put the turf down. I have removed most of the bark. I want to remove all the bark now and lay grass seed and turn the majority of it into grass apart from a flower bed I will have at the top. What is the best way to do it and the equipment I need? I'm not an expert so need all the help I could get.
Thanks in advance.