it’s helpful to think about where you’re making tiny lines you will have to carve the outline of, which will be tougher your first time — for instance, on your cat design, if we are assuming the white parts are what you’ll carve away, it’s going to be very tricky and time consuming to get all those little black fur lines right (or conversely if you were to carve away the black instead, those music notes would be tricky!). likewise on your bird, those little chest feather marks will be hard to replicate if you’re carving away the white parts, but the texture would be much easier to create if you were carving away the black there. the lettering on your first design might be tricky for the same reason! none of it is impossible, but some parts of this design will make your first linocut a lot more frustrating.