welcome to GoY :o)
Yes I understand what you are saying so no worries there.

the bark chips will rot down in a year or two so the area will be uneven again and you will be back to square one. Lifting gravel and membrane to add more will be a real pain!

Could you find any one to level it for you either by adding more topsoil, or levelling the soil you already have?

not much help I'm afraid but some one may offer a better remedy.

Hi Gardenless. Perhaps a picture of your garden as it stands at the moment might help members to give the best advice?

Maybe spread sand rather than bark under the membrane, but professional help would probably be best. Then you can enjoy your new area without worrying.

Thank you for your reply. I have posted a picture of the garden before bark and I will post one after bark when I can streach my arms again after all the digging. I wonder if I should put some soil on top of the bark and compact it down to try to even out the bumps like you suggested the bark will eventually rot so maybe a layer of soil on top could do the trick before the membrane and shingle.

Don't know how to put the picture here so it's ended up being my profile picture.😁

well if you are adding soil anyway just keep adding more til it is more even. don't forget it will settle down unless you 'tread' it flat.

if you have the photo the right size and the site does tell you [max size is 3mb] then have it in you pictures folder on your computer/phone.
click on the your options tab on the right at the top. the drop down menu has 'add photo'. click this and then it should take you through how to add photos. :o)

Thank you for all your advice and support during this first garden project. 😧