Please do not give up!
If your fabric is unwashed and you spray your blocks/block pieces with water or starch and then press, your fabric may shrink and give you problems.
If your fabric is prewashed, and you wet the pieces with water or starch, it is also easy to distort them, no matter how hard you try to press correctly.
I only starch before I start cutting my fabric, leaving the fabric dry during the piecing process.
I may add a drop of water to an intersection or dampen my finger and lightly wet just the seam area to conquer a stubborn seam that doesn't want to lay nicely, but that is all that I ever dampen.
If you can post pictures of this block and what you have so far, we can help walk you through it too :D:D:D