Here is your block, I thought I best send you a photo of it before I change my mind and decide to keep it!
I hope you like it but if you would prefer me to make one out of the fabric you sent then I can do that. I loved the fabrics you sent but when I read your specs I immediately thought of making a red heart with buttons. I have been wanting to have a go at this sort of project for a while but didn't know what to make. Now that I have done this I might have another go and make a cushion block for myself.