You asked for my advice, so I may as well throw in my two cents... While I don't think you need "serious help" as you claim, you do need to rethink how you make your sprites. First of all, you should try to smooth out your outlines before moving on to coloring your sprites, or doing anything else. I normally avoid doing stuff like this, as it seems a bit offensive to me, but I've modified one of your sprites to help get my point across.
The most important part of smoothing out your outline is making sure that it's only one pixel thick in most areas. See how much of a difference it makes? It's also important to round things out; right angles look neither organic nor ethereal.
Next, you need to work on shading. One common vein running through all of your sprites is how flat they look. The easiest way to give depth to sprites like these is to shade them in a way that implies a shape extending beyond what you're able to see; that's why the image above looks like a red circle and a shiny ball, rather than two red circles. The shading on your sprites seems kind of... random. You should color the outlines based on the shading on the sprite itself. Here's the same sprite, with the lines cleaned up a bit more and some basic shading added. I'm not exactly sure how an angelic bed sheet monster is supposed to be shaded, but I've included a few Pokemon with similar structures to serve as an example.
When I'm not sure how something should be shaded, I always look to existing Pokemon sprites; in the case of your turtle-esque fakemon, I would look to Bayleef, Grotle, Torkoal, and Bastiodon. Just try to find shapes similar to the ones you've drawn.
The last problem area is your palette selection... I always stick to palettes taken from existing Pokemon, as it will have more natural-looking results. The palette I've placed next to your angel sheet in the image above is taken from the R/S/E Togetic; I recommend shading it for practice, using that palette. Once you've reached the point that you need the colors for the hair and halo, try the palettes of Pokemon with long brown fur (Raticate, Eevee) and hard yellow parts (Sandshrew, Starmie) for the best results.