I’ve had two beautiful layer cakes of Heather Bailey fabric for several years now.
As soon as I saw this, I knew that is what I wanted to do with them.
I even had the ruler!
But they waited for years until I found the perfect fabric for the curved strips. I realized, I already had it. This is a top quality Muslin and it is the perfect color.
I cut my pieces and I was ready to sew!
Wa, wa, waaaaaaa……
Yuck. Not a quitter, I tried again.
Yeah, not much improvement.
For the third try, I used Kona Snow.
Better, not good. My improv curves were smoother. I’m going to go watch videos on this and try again another day. Or I could cut my losses and use the rest of these fabrics for a different project altogether.
Either way, this project is in time out until I return to AZ. Have a great day!
KatyQuilts 
OR you could offset and make them look more wonky! Do not give up. Love the colors
looking at the picture of cupcakes block pattern, they have a center block and sashes between blocks . Did you want to eliminate this and just join the blocks as shown on your sample? I think your blocks are fine. My humble opinion
I say you are brave to even try!
Pinning is good for this. Also, I found when doing these curvy pieces that stabilizing the fabrics before cutting with either light sizing or Best Press seems to help me. Always pin from middle to each end and everything seems to ease in for me. Don’t give up on this…it is going to be beautiful when finished!
Did you pin? I am not at all good with curved piecing but have found that a few pins help. Also, sometimes, sewing from the middle out to the edges. Good luck!
I have several blocks that I tried out on scrap fabric to see if I can make them work. Some I do/can some I can’t or do not enjoy the process after I figure it out. Makes for a wild assortment of orphan / ugly blocks sometimes