I can definitely relate, but I think that's the easier problem to have rather than having the technical skill but a creative block. It's the reason why I started taking different art classes to build up my skills. I began with color theory classes; when I was comfortable enough with that, I moved on to absolute beginner drawing classes. I knew absolutely nothing & was grateful the class covered mainly basics like supplies, how to properly use those supplies & that first class was just about basic straight & curved lines. I continue to take classes as often as my schedule & budget allow, and also have an ongoing "independent study" of sorts on fiber so I can better understand how to select fabrics & threads and what each will do, especially cotton since I sell crib quilts... although now I am also starting to study wool & silk a lot more as I'm hoping to make a wool quilt for my bed and am thinking of doing a couple competition pieces that I designed in RK Radiance, which is a cotton/silk blend, with 100% silk thread.
It is so exciting when I learn a new skill in class & realize that it's exactly what I need in order to help finally bring a design idea I've had floating around in my head for a while to life!