help with shine/gloss effect

[tempy]

i am very new to gimp 
i was wondering if there are any filters that make a gloss shine effect or any plugins that would give me this effect 




   
  stargazergeleffectnailpolishgreyscale2.webp (Size: 45.18 KB / Downloads: 8)

[Ofnuts]

Filters > Light and shadow  > Lighting effects. But you have to provide a bump map because the  plugin cannot guess the third dimension, which is necessary to create proper reflections.

[tempy]

        below is what i am trying to make glossy to add to the hand. at the moment i use a tiny bit of shine to the right of the nail but am wanting something more glossy. i tried making a bump map but it was just plain with a outline ?

[sallyanne]

try also different layer modes and gradients

Using your template - Fuzzy selected then inverted the transparent area to just select the nail. I took the red back to white. Added a transparent layer and with a black to white gradient did a linear stroke across the nail at the widest place. Taking the gradient out as far as possible or to your satisfaction.

I then copied it a couple times using multiply layer mode. I blurred the bottom layer before applying lighting effects - bump map.

If you haven't already merged your layers, copy one of the black and white layers and put at the bottom of the layer stack. Now you can safely merge them all and use colorise to get the colour you want or use another gradient.

Last of all add some contrast and that will make your white stand out more.

   

[denzjos]

I tried this: blurring the white a bit and adding a subtle reflection.
   

[rich2005]

@tempy

You could try the gimp_gmic_qt plugin, http://www.gmic.eu There are Win installers for both Gimp 2.10 and Gimp 3

Using the gmic Lights & Shadows section -> Illuminate 2D shape

   

Makes a semi-transparent overlay to give a depth/light effect.
or
That is illuminate mode. There is another mode which will make a bump map for you to apply manually.