Ana Nymus, if you're working in Photoshop, try this:
1. make a new layer on top of everything and set it to "linear light".
2. get a big, soft, round brush and set it at about 30% flow. Select a light, saturated blue and brush along the edges of glowing objects. This achieves glow. You can play around with the brush size and opacity until you get what you want (I find that a really big brush at low opacity works best).
You may want to try moving the glow layer under the character if it gets overpowering, and adding a bluish cel-shaded glow around its contours instead (kinda like you already did for the character's hair, but use a slightly bluer color).
And some bonus tip on shading metallic surfaces, though you're doing a good job already:
1. never color things plain grey unless you're entirely working in black and white or some other restrictive color scheme, it just looks dead and unrealistic. Light bounces around a lot, and objects always "borrow" some of each other's colors irl. This is especially true for reflective surfaces. A good place to start is pick a color that's prominent in your background (let's say purple here) and desaturate it ALMOST completely. Use that for your grey. (If you color pick the greys in the spoon from the first ref image you linked, you'll see it's actually very desaturated green.)
2. Don't be afraid to add bright spots and dark reflections with a hard-edged brush even on rounded objects. It makes it more realistic.
3. Use a full range of (coloured) grey, going all the way to white and black or almost-black, to suggest clean, new, polished metal.
4. When drawing objects you actually have around, like cutlery, it really helps to keep one next to you and actually look at it. We think we know what things look like but that's hilariously false, even for people who draw every day xD
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